71117720

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{691}}^1$

素因数の和:816

約数の個数: 64

約数和(自身を含む): 167408640

約数和(自身を除く): 96290920

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 83, 124, 155, 166, 248, 310, 332, 415, 620, 664, 691, 830, 1240, 1382, 1660, 2573, 2764, 3320, 3455, 5146, 5528, 6910, 10292, 12865, 13820, 20584, 21421, 25730, 27640, 42842, 51460, 57353, 85684, 102920, 107105, 114706, 171368, 214210, 229412, 286765, 428420, 458824, 573530, 856840, 1147060, 1777943, 2294120, 3555886, 7111772, 8889715, 14223544, 17779430, 35558860, 71117720]

約数ペア:

[(1, 71117720), (2, 35558860), (4, 17779430), (5, 14223544), (8, 8889715), (10, 7111772), (20, 3555886), (31, 2294120), (40, 1777943), (62, 1147060), (83, 856840), (124, 573530), (155, 458824), (166, 428420), (248, 286765), (310, 229412), (332, 214210), (415, 171368), (620, 114706), (664, 107105), (691, 102920), (830, 85684), (1240, 57353), (1382, 51460), (1660, 42842), (2573, 27640), (2764, 25730), (3320, 21421), (3455, 20584), (5146, 13820), (5528, 12865), (6910, 10292)]