21641956175

素因数分解:

$5^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{461}}^1\times {\mathrm{2017}}^1$

素因数の和:2521

約数の個数: 72

約数和(自身を含む): 32948047440

約数和(自身を除く): 11306091265

約数列:

[1, 5, 7, 19, 25, 35, 49, 95, 133, 175, 245, 461, 475, 665, 931, 1225, 2017, 2305, 3227, 3325, 4655, 8759, 10085, 11525, 14119, 16135, 22589, 23275, 38323, 43795, 50425, 61313, 70595, 80675, 98833, 112945, 191615, 218975, 268261, 306565, 352975, 429191, 494165, 564725, 929837, 958075, 1341305, 1532825, 1877827, 2145955, 2470825, 4649185, 6508859, 6706525, 9389135, 10729775, 17666903, 23245925, 32544295, 45562013, 46945675, 88334515, 123668321, 162721475, 227810065, 441672575, 618341605, 865678247, 1139050325, 3091708025, 4328391235, 21641956175]

約数ペア:

[(1, 21641956175), (5, 4328391235), (7, 3091708025), (19, 1139050325), (25, 865678247), (35, 618341605), (49, 441672575), (95, 227810065), (133, 162721475), (175, 123668321), (245, 88334515), (461, 46945675), (475, 45562013), (665, 32544295), (931, 23245925), (1225, 17666903), (2017, 10729775), (2305, 9389135), (3227, 6706525), (3325, 6508859), (4655, 4649185), (8759, 2470825), (10085, 2145955), (11525, 1877827), (14119, 1532825), (16135, 1341305), (22589, 958075), (23275, 929837), (38323, 564725), (43795, 494165), (50425, 429191), (61313, 352975), (70595, 306565), (80675, 268261), (98833, 218975), (112945, 191615)]