66880640

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{3371}}^1$

素因数の和:3421

約数の個数: 64

約数和(自身を含む): 165093120

約数和(自身を除く): 98212480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 310, 320, 496, 620, 640, 992, 1240, 1984, 2480, 3371, 3968, 4960, 6742, 9920, 13484, 16855, 19840, 26968, 33710, 53936, 67420, 104501, 107872, 134840, 209002, 215744, 269680, 418004, 431488, 522505, 539360, 836008, 1045010, 1078720, 1672016, 2090020, 2157440, 3344032, 4180040, 6688064, 8360080, 13376128, 16720160, 33440320, 66880640]

約数ペア:

[(1, 66880640), (2, 33440320), (4, 16720160), (5, 13376128), (8, 8360080), (10, 6688064), (16, 4180040), (20, 3344032), (31, 2157440), (32, 2090020), (40, 1672016), (62, 1078720), (64, 1045010), (80, 836008), (124, 539360), (128, 522505), (155, 431488), (160, 418004), (248, 269680), (310, 215744), (320, 209002), (496, 134840), (620, 107872), (640, 104501), (992, 67420), (1240, 53936), (1984, 33710), (2480, 26968), (3371, 19840), (3968, 16855), (4960, 13484), (6742, 9920)]