81717640

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^2\times {\mathrm{7069}}^1$

素因数の和:7114

約数の個数: 48

約数和(自身を含む): 195344100

約数和(自身を除く): 113626460

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 289, 340, 578, 680, 1156, 1445, 2312, 2890, 5780, 7069, 11560, 14138, 28276, 35345, 56552, 70690, 120173, 141380, 240346, 282760, 480692, 600865, 961384, 1201730, 2042941, 2403460, 4085882, 4806920, 8171764, 10214705, 16343528, 20429410, 40858820, 81717640]

約数ペア:

[(1, 81717640), (2, 40858820), (4, 20429410), (5, 16343528), (8, 10214705), (10, 8171764), (17, 4806920), (20, 4085882), (34, 2403460), (40, 2042941), (68, 1201730), (85, 961384), (136, 600865), (170, 480692), (289, 282760), (340, 240346), (578, 141380), (680, 120173), (1156, 70690), (1445, 56552), (2312, 35345), (2890, 28276), (5780, 14138), (7069, 11560)]