21121620

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{2083}}^1$

素因数の和:2121

約数の個数: 72

約数和(自身を含む): 64070496

約数和(自身を除く): 42948876

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 169, 195, 260, 338, 390, 507, 676, 780, 845, 1014, 1690, 2028, 2083, 2535, 3380, 4166, 5070, 6249, 8332, 10140, 10415, 12498, 20830, 24996, 27079, 31245, 41660, 54158, 62490, 81237, 108316, 124980, 135395, 162474, 270790, 324948, 352027, 406185, 541580, 704054, 812370, 1056081, 1408108, 1624740, 1760135, 2112162, 3520270, 4224324, 5280405, 7040540, 10560810, 21121620]

約数ペア:

[(1, 21121620), (2, 10560810), (3, 7040540), (4, 5280405), (5, 4224324), (6, 3520270), (10, 2112162), (12, 1760135), (13, 1624740), (15, 1408108), (20, 1056081), (26, 812370), (30, 704054), (39, 541580), (52, 406185), (60, 352027), (65, 324948), (78, 270790), (130, 162474), (156, 135395), (169, 124980), (195, 108316), (260, 81237), (338, 62490), (390, 54158), (507, 41660), (676, 31245), (780, 27079), (845, 24996), (1014, 20830), (1690, 12498), (2028, 10415), (2083, 10140), (2535, 8332), (3380, 6249), (4166, 5070)]