31881280

素因数分解:

$2^6\times 5^1\times {\mathrm{67}}^1\times {\mathrm{1487}}^1$

素因数の和:1571

約数の個数: 56

約数和(自身を含む): 77102208

約数和(自身を除く): 45220928

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 67, 80, 134, 160, 268, 320, 335, 536, 670, 1072, 1340, 1487, 2144, 2680, 2974, 4288, 5360, 5948, 7435, 10720, 11896, 14870, 21440, 23792, 29740, 47584, 59480, 95168, 99629, 118960, 199258, 237920, 398516, 475840, 498145, 797032, 996290, 1594064, 1992580, 3188128, 3985160, 6376256, 7970320, 15940640, 31881280]

約数ペア:

[(1, 31881280), (2, 15940640), (4, 7970320), (5, 6376256), (8, 3985160), (10, 3188128), (16, 1992580), (20, 1594064), (32, 996290), (40, 797032), (64, 498145), (67, 475840), (80, 398516), (134, 237920), (160, 199258), (268, 118960), (320, 99629), (335, 95168), (536, 59480), (670, 47584), (1072, 29740), (1340, 23792), (1487, 21440), (2144, 14870), (2680, 11896), (2974, 10720), (4288, 7435), (5360, 5948)]