20005960

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{487}}^1$

素因数の和:590

約数の個数: 64

約数和(自身を含む): 49190400

約数和(自身を除く): 29184440

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 79, 104, 130, 158, 260, 316, 395, 487, 520, 632, 790, 974, 1027, 1580, 1948, 2054, 2435, 3160, 3896, 4108, 4870, 5135, 6331, 8216, 9740, 10270, 12662, 19480, 20540, 25324, 31655, 38473, 41080, 50648, 63310, 76946, 126620, 153892, 192365, 253240, 307784, 384730, 500149, 769460, 1000298, 1538920, 2000596, 2500745, 4001192, 5001490, 10002980, 20005960]

約数ペア:

[(1, 20005960), (2, 10002980), (4, 5001490), (5, 4001192), (8, 2500745), (10, 2000596), (13, 1538920), (20, 1000298), (26, 769460), (40, 500149), (52, 384730), (65, 307784), (79, 253240), (104, 192365), (130, 153892), (158, 126620), (260, 76946), (316, 63310), (395, 50648), (487, 41080), (520, 38473), (632, 31655), (790, 25324), (974, 20540), (1027, 19480), (1580, 12662), (1948, 10270), (2054, 9740), (2435, 8216), (3160, 6331), (3896, 5135), (4108, 4870)]