18042780

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{19}}^2$

素因数の和:81

約数の個数: 216

約数和(自身を含む): 65672208

約数和(自身を除く): 47629428

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 17, 19, 20, 21, 28, 30, 34, 35, 38, 42, 49, 51, 57, 60, 68, 70, 76, 84, 85, 95, 98, 102, 105, 114, 119, 133, 140, 147, 170, 190, 196, 204, 210, 228, 238, 245, 255, 266, 285, 294, 323, 340, 357, 361, 380, 399, 420, 476, 490, 510, 532, 570, 588, 595, 646, 665, 714, 722, 735, 798, 833, 931, 969, 980, 1020, 1083, 1140, 1190, 1292, 1330, 1428, 1444, 1470, 1596, 1615, 1666, 1785, 1805, 1862, 1938, 1995, 2166, 2261, 2380, 2499, 2527, 2660, 2793, 2940, 3230, 3332, 3570, 3610, 3724, 3876, 3990, 4165, 4332, 4522, 4655, 4845, 4998, 5054, 5415, 5586, 6137, 6460, 6783, 7140, 7220, 7581, 7980, 8330, 9044, 9310, 9690, 9996, 10108, 10830, 11172, 11305, 12274, 12495, 12635, 13566, 13965, 15162, 15827, 16660, 17689, 18411, 18620, 19380, 21660, 22610, 24548, 24990, 25270, 27132, 27930, 30324, 30685, 31654, 33915, 35378, 36822, 37905, 42959, 45220, 47481, 49980, 50540, 53067, 55860, 61370, 63308, 67830, 70756, 73644, 75810, 79135, 85918, 88445, 92055, 94962, 106134, 122740, 128877, 135660, 151620, 158270, 171836, 176890, 184110, 189924, 212268, 214795, 237405, 257754, 265335, 300713, 316540, 353780, 368220, 429590, 474810, 515508, 530670, 601426, 644385, 859180, 902139, 949620, 1061340, 1202852, 1288770, 1503565, 1804278, 2577540, 3007130, 3608556, 4510695, 6014260, 9021390, 18042780]

約数ペア:

[(1, 18042780), (2, 9021390), (3, 6014260), (4, 4510695), (5, 3608556), (6, 3007130), (7, 2577540), (10, 1804278), (12, 1503565), (14, 1288770), (15, 1202852), (17, 1061340), (19, 949620), (20, 902139), (21, 859180), (28, 644385), (30, 601426), (34, 530670), (35, 515508), (38, 474810), (42, 429590), (49, 368220), (51, 353780), (57, 316540), (60, 300713), (68, 265335), (70, 257754), (76, 237405), (84, 214795), (85, 212268), (95, 189924), (98, 184110), (102, 176890), (105, 171836), (114, 158270), (119, 151620), (133, 135660), (140, 128877), (147, 122740), (170, 106134), (190, 94962), (196, 92055), (204, 88445), (210, 85918), (228, 79135), (238, 75810), (245, 73644), (255, 70756), (266, 67830), (285, 63308), (294, 61370), (323, 55860), (340, 53067), (357, 50540), (361, 49980), (380, 47481), (399, 45220), (420, 42959), (476, 37905), (490, 36822), (510, 35378), (532, 33915), (570, 31654), (588, 30685), (595, 30324), (646, 27930), (665, 27132), (714, 25270), (722, 24990), (735, 24548), (798, 22610), (833, 21660), (931, 19380), (969, 18620), (980, 18411), (1020, 17689), (1083, 16660), (1140, 15827), (1190, 15162), (1292, 13965), (1330, 13566), (1428, 12635), (1444, 12495), (1470, 12274), (1596, 11305), (1615, 11172), (1666, 10830), (1785, 10108), (1805, 9996), (1862, 9690), (1938, 9310), (1995, 9044), (2166, 8330), (2261, 7980), (2380, 7581), (2499, 7220), (2527, 7140), (2660, 6783), (2793, 6460), (2940, 6137), (3230, 5586), (3332, 5415), (3570, 5054), (3610, 4998), (3724, 4845), (3876, 4655), (3990, 4522), (4165, 4332)]