31128916

素因数分解:

$2^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{643}}^1$

素因数の和:693

約数の個数: 72

約数和(自身を含む): 71947680

約数和(自身を除く): 40818764

約数列:

[1, 2, 4, 7, 13, 14, 19, 26, 28, 38, 49, 52, 76, 91, 98, 133, 182, 196, 247, 266, 364, 494, 532, 637, 643, 931, 988, 1274, 1286, 1729, 1862, 2548, 2572, 3458, 3724, 4501, 6916, 8359, 9002, 12103, 12217, 16718, 18004, 24206, 24434, 31507, 33436, 48412, 48868, 58513, 63014, 85519, 117026, 126028, 158821, 171038, 234052, 317642, 342076, 409591, 598633, 635284, 819182, 1111747, 1197266, 1638364, 2223494, 2394532, 4446988, 7782229, 15564458, 31128916]

約数ペア:

[(1, 31128916), (2, 15564458), (4, 7782229), (7, 4446988), (13, 2394532), (14, 2223494), (19, 1638364), (26, 1197266), (28, 1111747), (38, 819182), (49, 635284), (52, 598633), (76, 409591), (91, 342076), (98, 317642), (133, 234052), (182, 171038), (196, 158821), (247, 126028), (266, 117026), (364, 85519), (494, 63014), (532, 58513), (637, 48868), (643, 48412), (931, 33436), (988, 31507), (1274, 24434), (1286, 24206), (1729, 18004), (1862, 16718), (2548, 12217), (2572, 12103), (3458, 9002), (3724, 8359), (4501, 6916)]