21677560

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{97}}^1\times {\mathrm{151}}^1$

素因数の和:296

約数の個数: 64

約数和(自身を含む): 50944320

約数和(自身を除く): 29266760

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 97, 148, 151, 185, 194, 296, 302, 370, 388, 485, 604, 740, 755, 776, 970, 1208, 1480, 1510, 1940, 3020, 3589, 3880, 5587, 6040, 7178, 11174, 14356, 14647, 17945, 22348, 27935, 28712, 29294, 35890, 44696, 55870, 58588, 71780, 73235, 111740, 117176, 143560, 146470, 223480, 292940, 541939, 585880, 1083878, 2167756, 2709695, 4335512, 5419390, 10838780, 21677560]

約数ペア:

[(1, 21677560), (2, 10838780), (4, 5419390), (5, 4335512), (8, 2709695), (10, 2167756), (20, 1083878), (37, 585880), (40, 541939), (74, 292940), (97, 223480), (148, 146470), (151, 143560), (185, 117176), (194, 111740), (296, 73235), (302, 71780), (370, 58588), (388, 55870), (485, 44696), (604, 35890), (740, 29294), (755, 28712), (776, 27935), (970, 22348), (1208, 17945), (1480, 14647), (1510, 14356), (1940, 11174), (3020, 7178), (3589, 6040), (3880, 5587)]