20493704

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1$

素因数の和:163

約数の個数: 128

約数和(自身を含む): 53913600

約数和(自身を除く): 33419896

約数列:

[1, 2, 4, 7, 8, 11, 14, 17, 19, 22, 28, 34, 38, 44, 56, 68, 76, 77, 88, 103, 119, 133, 136, 152, 154, 187, 206, 209, 238, 266, 308, 323, 374, 412, 418, 476, 532, 616, 646, 721, 748, 824, 836, 952, 1064, 1133, 1292, 1309, 1442, 1463, 1496, 1672, 1751, 1957, 2261, 2266, 2584, 2618, 2884, 2926, 3502, 3553, 3914, 4522, 4532, 5236, 5768, 5852, 7004, 7106, 7828, 7931, 9044, 9064, 10472, 11704, 12257, 13699, 14008, 14212, 15656, 15862, 18088, 19261, 21527, 24514, 24871, 27398, 28424, 31724, 33269, 38522, 43054, 49028, 49742, 54796, 63448, 66538, 77044, 86108, 98056, 99484, 109592, 133076, 134827, 150689, 154088, 172216, 198968, 232883, 266152, 269654, 301378, 365959, 465766, 539308, 602756, 731918, 931532, 1078616, 1205512, 1463836, 1863064, 2561713, 2927672, 5123426, 10246852, 20493704]

約数ペア:

[(1, 20493704), (2, 10246852), (4, 5123426), (7, 2927672), (8, 2561713), (11, 1863064), (14, 1463836), (17, 1205512), (19, 1078616), (22, 931532), (28, 731918), (34, 602756), (38, 539308), (44, 465766), (56, 365959), (68, 301378), (76, 269654), (77, 266152), (88, 232883), (103, 198968), (119, 172216), (133, 154088), (136, 150689), (152, 134827), (154, 133076), (187, 109592), (206, 99484), (209, 98056), (238, 86108), (266, 77044), (308, 66538), (323, 63448), (374, 54796), (412, 49742), (418, 49028), (476, 43054), (532, 38522), (616, 33269), (646, 31724), (721, 28424), (748, 27398), (824, 24871), (836, 24514), (952, 21527), (1064, 19261), (1133, 18088), (1292, 15862), (1309, 15656), (1442, 14212), (1463, 14008), (1496, 13699), (1672, 12257), (1751, 11704), (1957, 10472), (2261, 9064), (2266, 9044), (2584, 7931), (2618, 7828), (2884, 7106), (2926, 7004), (3502, 5852), (3553, 5768), (3914, 5236), (4522, 4532)]