20355188

素因数分解:

$2^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{149}}^1$

素因数の和:225

約数の個数: 72

約数和(自身を含む): 45246600

約数和(自身を除く): 24891412

約数列:

[1, 2, 4, 7, 14, 17, 28, 34, 41, 49, 68, 82, 98, 119, 149, 164, 196, 238, 287, 298, 476, 574, 596, 697, 833, 1043, 1148, 1394, 1666, 2009, 2086, 2533, 2788, 3332, 4018, 4172, 4879, 5066, 6109, 7301, 8036, 9758, 10132, 12218, 14602, 17731, 19516, 24436, 29204, 34153, 35462, 42763, 68306, 70924, 85526, 103853, 124117, 136612, 171052, 207706, 248234, 299341, 415412, 496468, 598682, 726971, 1197364, 1453942, 2907884, 5088797, 10177594, 20355188]

約数ペア:

[(1, 20355188), (2, 10177594), (4, 5088797), (7, 2907884), (14, 1453942), (17, 1197364), (28, 726971), (34, 598682), (41, 496468), (49, 415412), (68, 299341), (82, 248234), (98, 207706), (119, 171052), (149, 136612), (164, 124117), (196, 103853), (238, 85526), (287, 70924), (298, 68306), (476, 42763), (574, 35462), (596, 34153), (697, 29204), (833, 24436), (1043, 19516), (1148, 17731), (1394, 14602), (1666, 12218), (2009, 10132), (2086, 9758), (2533, 8036), (2788, 7301), (3332, 6109), (4018, 5066), (4172, 4879)]