21646790

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1$

素因数の和:197

約数の個数: 64

約数和(自身を含む): 44789760

約数和(自身を除く): 23142970

約数列:

[1, 2, 5, 10, 11, 22, 47, 53, 55, 79, 94, 106, 110, 158, 235, 265, 395, 470, 517, 530, 583, 790, 869, 1034, 1166, 1738, 2491, 2585, 2915, 3713, 4187, 4345, 4982, 5170, 5830, 7426, 8374, 8690, 12455, 18565, 20935, 24910, 27401, 37130, 40843, 41870, 46057, 54802, 81686, 92114, 137005, 196789, 204215, 230285, 274010, 393578, 408430, 460570, 983945, 1967890, 2164679, 4329358, 10823395, 21646790]

約数ペア:

[(1, 21646790), (2, 10823395), (5, 4329358), (10, 2164679), (11, 1967890), (22, 983945), (47, 460570), (53, 408430), (55, 393578), (79, 274010), (94, 230285), (106, 204215), (110, 196789), (158, 137005), (235, 92114), (265, 81686), (395, 54802), (470, 46057), (517, 41870), (530, 40843), (583, 37130), (790, 27401), (869, 24910), (1034, 20935), (1166, 18565), (1738, 12455), (2491, 8690), (2585, 8374), (2915, 7426), (3713, 5830), (4187, 5170), (4345, 4982)]