21260330

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{383}}^1$

素因数の和:471

約数の個数: 64

約数和(自身を含む): 47996928

約数和(自身を除く): 26736598

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 61, 65, 70, 91, 122, 130, 182, 305, 383, 427, 455, 610, 766, 793, 854, 910, 1586, 1915, 2135, 2681, 3830, 3965, 4270, 4979, 5362, 5551, 7930, 9958, 11102, 13405, 23363, 24895, 26810, 27755, 34853, 46726, 49790, 55510, 69706, 116815, 163541, 174265, 233630, 303719, 327082, 348530, 607438, 817705, 1518595, 1635410, 2126033, 3037190, 4252066, 10630165, 21260330]

約数ペア:

[(1, 21260330), (2, 10630165), (5, 4252066), (7, 3037190), (10, 2126033), (13, 1635410), (14, 1518595), (26, 817705), (35, 607438), (61, 348530), (65, 327082), (70, 303719), (91, 233630), (122, 174265), (130, 163541), (182, 116815), (305, 69706), (383, 55510), (427, 49790), (455, 46726), (610, 34853), (766, 27755), (793, 26810), (854, 24895), (910, 23363), (1586, 13405), (1915, 11102), (2135, 9958), (2681, 7930), (3830, 5551), (3965, 5362), (4270, 4979)]