15211820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{1427}}^1$

素因数の和:1490

約数の個数: 48

約数和(自身を含む): 35265888

約数和(自身を除く): 20054068

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 41, 52, 65, 82, 130, 164, 205, 260, 410, 533, 820, 1066, 1427, 2132, 2665, 2854, 5330, 5708, 7135, 10660, 14270, 18551, 28540, 37102, 58507, 74204, 92755, 117014, 185510, 234028, 292535, 371020, 585070, 760591, 1170140, 1521182, 3042364, 3802955, 7605910, 15211820]

約数ペア:

[(1, 15211820), (2, 7605910), (4, 3802955), (5, 3042364), (10, 1521182), (13, 1170140), (20, 760591), (26, 585070), (41, 371020), (52, 292535), (65, 234028), (82, 185510), (130, 117014), (164, 92755), (205, 74204), (260, 58507), (410, 37102), (533, 28540), (820, 18551), (1066, 14270), (1427, 10660), (2132, 7135), (2665, 5708), (2854, 5330)]