1721980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{179}}^1$

素因数の和:238

約数の個数: 48

約数和(自身を含む): 4021920

約数和(自身を除く): 2299940

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 37, 52, 65, 74, 130, 148, 179, 185, 260, 358, 370, 481, 716, 740, 895, 962, 1790, 1924, 2327, 2405, 3580, 4654, 4810, 6623, 9308, 9620, 11635, 13246, 23270, 26492, 33115, 46540, 66230, 86099, 132460, 172198, 344396, 430495, 860990, 1721980]

約数ペア:

[(1, 1721980), (2, 860990), (4, 430495), (5, 344396), (10, 172198), (13, 132460), (20, 86099), (26, 66230), (37, 46540), (52, 33115), (65, 26492), (74, 23270), (130, 13246), (148, 11635), (179, 9620), (185, 9308), (260, 6623), (358, 4810), (370, 4654), (481, 3580), (716, 2405), (740, 2327), (895, 1924), (962, 1790)]