18850480

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{691}}^1$

素因数の和:746

約数の個数: 80

約数和(自身を含む): 49425408

約数和(自身を除く): 30574928

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 31, 40, 44, 55, 62, 80, 88, 110, 124, 155, 176, 220, 248, 310, 341, 440, 496, 620, 682, 691, 880, 1240, 1364, 1382, 1705, 2480, 2728, 2764, 3410, 3455, 5456, 5528, 6820, 6910, 7601, 11056, 13640, 13820, 15202, 21421, 27280, 27640, 30404, 38005, 42842, 55280, 60808, 76010, 85684, 107105, 121616, 152020, 171368, 214210, 235631, 304040, 342736, 428420, 471262, 608080, 856840, 942524, 1178155, 1713680, 1885048, 2356310, 3770096, 4712620, 9425240, 18850480]

約数ペア:

[(1, 18850480), (2, 9425240), (4, 4712620), (5, 3770096), (8, 2356310), (10, 1885048), (11, 1713680), (16, 1178155), (20, 942524), (22, 856840), (31, 608080), (40, 471262), (44, 428420), (55, 342736), (62, 304040), (80, 235631), (88, 214210), (110, 171368), (124, 152020), (155, 121616), (176, 107105), (220, 85684), (248, 76010), (310, 60808), (341, 55280), (440, 42842), (496, 38005), (620, 30404), (682, 27640), (691, 27280), (880, 21421), (1240, 15202), (1364, 13820), (1382, 13640), (1705, 11056), (2480, 7601), (2728, 6910), (2764, 6820), (3410, 5528), (3455, 5456)]