20151820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{179}}^1\times {\mathrm{433}}^1$

素因数の和:634

約数の個数: 48

約数和(自身を含む): 45934560

約数和(自身を除く): 25782740

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 179, 260, 358, 433, 716, 866, 895, 1732, 1790, 2165, 2327, 3580, 4330, 4654, 5629, 8660, 9308, 11258, 11635, 22516, 23270, 28145, 46540, 56290, 77507, 112580, 155014, 310028, 387535, 775070, 1007591, 1550140, 2015182, 4030364, 5037955, 10075910, 20151820]

約数ペア:

[(1, 20151820), (2, 10075910), (4, 5037955), (5, 4030364), (10, 2015182), (13, 1550140), (20, 1007591), (26, 775070), (52, 387535), (65, 310028), (130, 155014), (179, 112580), (260, 77507), (358, 56290), (433, 46540), (716, 28145), (866, 23270), (895, 22516), (1732, 11635), (1790, 11258), (2165, 9308), (2327, 8660), (3580, 5629), (4330, 4654)]