80640256

素因数分解:

$2^8\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{281}}^1$

素因数の和:375

約数の個数: 72

約数和(自身を含む): 172922400

約数和(自身を除く): 92282144

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 59, 64, 76, 118, 128, 152, 236, 256, 281, 304, 472, 562, 608, 944, 1121, 1124, 1216, 1888, 2242, 2248, 2432, 3776, 4484, 4496, 4864, 5339, 7552, 8968, 8992, 10678, 15104, 16579, 17936, 17984, 21356, 33158, 35872, 35968, 42712, 66316, 71744, 71936, 85424, 132632, 143488, 170848, 265264, 286976, 315001, 341696, 530528, 630002, 683392, 1061056, 1260004, 1366784, 2122112, 2520008, 4244224, 5040016, 10080032, 20160064, 40320128, 80640256]

約数ペア:

[(1, 80640256), (2, 40320128), (4, 20160064), (8, 10080032), (16, 5040016), (19, 4244224), (32, 2520008), (38, 2122112), (59, 1366784), (64, 1260004), (76, 1061056), (118, 683392), (128, 630002), (152, 530528), (236, 341696), (256, 315001), (281, 286976), (304, 265264), (472, 170848), (562, 143488), (608, 132632), (944, 85424), (1121, 71936), (1124, 71744), (1216, 66316), (1888, 42712), (2242, 35968), (2248, 35872), (2432, 33158), (3776, 21356), (4484, 17984), (4496, 17936), (4864, 16579), (5339, 15104), (7552, 10678), (8968, 8992)]