21148530

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{211}}^1\times {\mathrm{257}}^1$

素因数の和:491

約数の個数: 64

約数和(自身を含む): 55133568

約数和(自身を除く): 33985038

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 211, 257, 390, 422, 514, 633, 771, 1055, 1266, 1285, 1542, 2110, 2570, 2743, 3165, 3341, 3855, 5486, 6330, 6682, 7710, 8229, 10023, 13715, 16458, 16705, 20046, 27430, 33410, 41145, 50115, 54227, 82290, 100230, 108454, 162681, 271135, 325362, 542270, 704951, 813405, 1409902, 1626810, 2114853, 3524755, 4229706, 7049510, 10574265, 21148530]

約数ペア:

[(1, 21148530), (2, 10574265), (3, 7049510), (5, 4229706), (6, 3524755), (10, 2114853), (13, 1626810), (15, 1409902), (26, 813405), (30, 704951), (39, 542270), (65, 325362), (78, 271135), (130, 162681), (195, 108454), (211, 100230), (257, 82290), (390, 54227), (422, 50115), (514, 41145), (633, 33410), (771, 27430), (1055, 20046), (1266, 16705), (1285, 16458), (1542, 13715), (2110, 10023), (2570, 8229), (2743, 7710), (3165, 6682), (3341, 6330), (3855, 5486)]