20717408040

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{404321}}^1$

素因数の和:404403

約数の個数: 128

約数和(自身を含む): 72195736320

約数和(自身を除く): 51478328280

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 61, 70, 84, 105, 120, 122, 140, 168, 183, 210, 244, 280, 305, 366, 420, 427, 488, 610, 732, 840, 854, 915, 1220, 1281, 1464, 1708, 1830, 2135, 2440, 2562, 3416, 3660, 4270, 5124, 6405, 7320, 8540, 10248, 12810, 17080, 25620, 51240, 404321, 808642, 1212963, 1617284, 2021605, 2425926, 2830247, 3234568, 4043210, 4851852, 5660494, 6064815, 8086420, 8490741, 9703704, 11320988, 12129630, 14151235, 16172840, 16981482, 22641976, 24259260, 24663581, 28302470, 33962964, 42453705, 48518520, 49327162, 56604940, 67925928, 73990743, 84907410, 98654324, 113209880, 123317905, 147981486, 169814820, 172645067, 197308648, 246635810, 295962972, 339629640, 345290134, 369953715, 493271620, 517935201, 591925944, 690580268, 739907430, 863225335, 986543240, 1035870402, 1381160536, 1479814860, 1726450670, 2071740804, 2589676005, 2959629720, 3452901340, 4143481608, 5179352010, 6905802680, 10358704020, 20717408040]

約数ペア:

[(1, 20717408040), (2, 10358704020), (3, 6905802680), (4, 5179352010), (5, 4143481608), (6, 3452901340), (7, 2959629720), (8, 2589676005), (10, 2071740804), (12, 1726450670), (14, 1479814860), (15, 1381160536), (20, 1035870402), (21, 986543240), (24, 863225335), (28, 739907430), (30, 690580268), (35, 591925944), (40, 517935201), (42, 493271620), (56, 369953715), (60, 345290134), (61, 339629640), (70, 295962972), (84, 246635810), (105, 197308648), (120, 172645067), (122, 169814820), (140, 147981486), (168, 123317905), (183, 113209880), (210, 98654324), (244, 84907410), (280, 73990743), (305, 67925928), (366, 56604940), (420, 49327162), (427, 48518520), (488, 42453705), (610, 33962964), (732, 28302470), (840, 24663581), (854, 24259260), (915, 22641976), (1220, 16981482), (1281, 16172840), (1464, 14151235), (1708, 12129630), (1830, 11320988), (2135, 9703704), (2440, 8490741), (2562, 8086420), (3416, 6064815), (3660, 5660494), (4270, 4851852), (5124, 4043210), (6405, 3234568), (7320, 2830247), (8540, 2425926), (10248, 2021605), (12810, 1617284), (17080, 1212963), (25620, 808642), (51240, 404321)]