12456780

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{223}}^1$

素因数の和:268

約数の個数: 144

約数和(自身を含む): 42900480

約数和(自身を除く): 30443700

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 19, 20, 21, 28, 30, 35, 38, 42, 49, 57, 60, 70, 76, 84, 95, 98, 105, 114, 133, 140, 147, 190, 196, 210, 223, 228, 245, 266, 285, 294, 380, 399, 420, 446, 490, 532, 570, 588, 665, 669, 735, 798, 892, 931, 980, 1115, 1140, 1330, 1338, 1470, 1561, 1596, 1862, 1995, 2230, 2660, 2676, 2793, 2940, 3122, 3345, 3724, 3990, 4237, 4460, 4655, 4683, 5586, 6244, 6690, 7805, 7980, 8474, 9310, 9366, 10927, 11172, 12711, 13380, 13965, 15610, 16948, 18620, 18732, 21185, 21854, 23415, 25422, 27930, 29659, 31220, 32781, 42370, 43708, 46830, 50844, 54635, 55860, 59318, 63555, 65562, 84740, 88977, 93660, 109270, 118636, 127110, 131124, 148295, 163905, 177954, 207613, 218540, 254220, 296590, 327810, 355908, 415226, 444885, 593180, 622839, 655620, 830452, 889770, 1038065, 1245678, 1779540, 2076130, 2491356, 3114195, 4152260, 6228390, 12456780]

約数ペア:

[(1, 12456780), (2, 6228390), (3, 4152260), (4, 3114195), (5, 2491356), (6, 2076130), (7, 1779540), (10, 1245678), (12, 1038065), (14, 889770), (15, 830452), (19, 655620), (20, 622839), (21, 593180), (28, 444885), (30, 415226), (35, 355908), (38, 327810), (42, 296590), (49, 254220), (57, 218540), (60, 207613), (70, 177954), (76, 163905), (84, 148295), (95, 131124), (98, 127110), (105, 118636), (114, 109270), (133, 93660), (140, 88977), (147, 84740), (190, 65562), (196, 63555), (210, 59318), (223, 55860), (228, 54635), (245, 50844), (266, 46830), (285, 43708), (294, 42370), (380, 32781), (399, 31220), (420, 29659), (446, 27930), (490, 25422), (532, 23415), (570, 21854), (588, 21185), (665, 18732), (669, 18620), (735, 16948), (798, 15610), (892, 13965), (931, 13380), (980, 12711), (1115, 11172), (1140, 10927), (1330, 9366), (1338, 9310), (1470, 8474), (1561, 7980), (1596, 7805), (1862, 6690), (1995, 6244), (2230, 5586), (2660, 4683), (2676, 4655), (2793, 4460), (2940, 4237), (3122, 3990), (3345, 3724)]