20365280

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{9791}}^1$

素因数の和:9819

約数の個数: 48

約数和(自身を含む): 51819264

約数和(自身を除く): 31453984

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 9791, 19582, 39164, 48955, 78328, 97910, 127283, 156656, 195820, 254566, 313312, 391640, 509132, 636415, 783280, 1018264, 1272830, 1566560, 2036528, 2545660, 4073056, 5091320, 10182640, 20365280]

約数ペア:

[(1, 20365280), (2, 10182640), (4, 5091320), (5, 4073056), (8, 2545660), (10, 2036528), (13, 1566560), (16, 1272830), (20, 1018264), (26, 783280), (32, 636415), (40, 509132), (52, 391640), (65, 313312), (80, 254566), (104, 195820), (130, 156656), (160, 127283), (208, 97910), (260, 78328), (416, 48955), (520, 39164), (1040, 19582), (2080, 9791)]