278313980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{29671}}^1$

素因数の和:29754

約数の個数: 48

約数和(自身を含む): 677945856

約数和(自身を除く): 399631876

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 67, 70, 134, 140, 268, 335, 469, 670, 938, 1340, 1876, 2345, 4690, 9380, 29671, 59342, 118684, 148355, 207697, 296710, 415394, 593420, 830788, 1038485, 1987957, 2076970, 3975914, 4153940, 7951828, 9939785, 13915699, 19879570, 27831398, 39759140, 55662796, 69578495, 139156990, 278313980]

約数ペア:

[(1, 278313980), (2, 139156990), (4, 69578495), (5, 55662796), (7, 39759140), (10, 27831398), (14, 19879570), (20, 13915699), (28, 9939785), (35, 7951828), (67, 4153940), (70, 3975914), (134, 2076970), (140, 1987957), (268, 1038485), (335, 830788), (469, 593420), (670, 415394), (938, 296710), (1340, 207697), (1876, 148355), (2345, 118684), (4690, 59342), (9380, 29671)]