20813416

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{103}}^1$

素因数の和:218

約数の個数: 64

約数和(自身を含む): 44553600

約数和(自身を除く): 23740184

約数列:

[1, 2, 4, 8, 13, 26, 29, 52, 58, 67, 103, 104, 116, 134, 206, 232, 268, 377, 412, 536, 754, 824, 871, 1339, 1508, 1742, 1943, 2678, 2987, 3016, 3484, 3886, 5356, 5974, 6901, 6968, 7772, 10712, 11948, 13802, 15544, 23896, 25259, 27604, 38831, 50518, 55208, 77662, 89713, 101036, 155324, 179426, 200129, 202072, 310648, 358852, 400258, 717704, 800516, 1601032, 2601677, 5203354, 10406708, 20813416]

約数ペア:

[(1, 20813416), (2, 10406708), (4, 5203354), (8, 2601677), (13, 1601032), (26, 800516), (29, 717704), (52, 400258), (58, 358852), (67, 310648), (103, 202072), (104, 200129), (116, 179426), (134, 155324), (206, 101036), (232, 89713), (268, 77662), (377, 55208), (412, 50518), (536, 38831), (754, 27604), (824, 25259), (871, 23896), (1339, 15544), (1508, 13802), (1742, 11948), (1943, 10712), (2678, 7772), (2987, 6968), (3016, 6901), (3484, 5974), (3886, 5356)]