217859480

素因数分解:

$2^3\times 5^1\times {\mathrm{113}}^1\times {\mathrm{157}}^1\times {\mathrm{307}}^1$

素因数の和:588

約数の個数: 64

約数和(自身を含む): 499292640

約数和(自身を除く): 281433160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 113, 157, 226, 307, 314, 452, 565, 614, 628, 785, 904, 1130, 1228, 1256, 1535, 1570, 2260, 2456, 3070, 3140, 4520, 6140, 6280, 12280, 17741, 34691, 35482, 48199, 69382, 70964, 88705, 96398, 138764, 141928, 173455, 177410, 192796, 240995, 277528, 346910, 354820, 385592, 481990, 693820, 709640, 963980, 1387640, 1927960, 5446487, 10892974, 21785948, 27232435, 43571896, 54464870, 108929740, 217859480]

約数ペア:

[(1, 217859480), (2, 108929740), (4, 54464870), (5, 43571896), (8, 27232435), (10, 21785948), (20, 10892974), (40, 5446487), (113, 1927960), (157, 1387640), (226, 963980), (307, 709640), (314, 693820), (452, 481990), (565, 385592), (614, 354820), (628, 346910), (785, 277528), (904, 240995), (1130, 192796), (1228, 177410), (1256, 173455), (1535, 141928), (1570, 138764), (2260, 96398), (2456, 88705), (3070, 70964), (3140, 69382), (4520, 48199), (6140, 35482), (6280, 34691), (12280, 17741)]