21249410

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1229}}^1$

素因数の和:1275

約数の個数: 64

約数和(自身を含む): 49593600

約数和(自身を除く): 28344190

約数列:

[1, 2, 5, 7, 10, 13, 14, 19, 26, 35, 38, 65, 70, 91, 95, 130, 133, 182, 190, 247, 266, 455, 494, 665, 910, 1229, 1235, 1330, 1729, 2458, 2470, 3458, 6145, 8603, 8645, 12290, 15977, 17206, 17290, 23351, 31954, 43015, 46702, 79885, 86030, 111839, 116755, 159770, 163457, 223678, 233510, 303563, 326914, 559195, 607126, 817285, 1118390, 1517815, 1634570, 2124941, 3035630, 4249882, 10624705, 21249410]

約数ペア:

[(1, 21249410), (2, 10624705), (5, 4249882), (7, 3035630), (10, 2124941), (13, 1634570), (14, 1517815), (19, 1118390), (26, 817285), (35, 607126), (38, 559195), (65, 326914), (70, 303563), (91, 233510), (95, 223678), (130, 163457), (133, 159770), (182, 116755), (190, 111839), (247, 86030), (266, 79885), (455, 46702), (494, 43015), (665, 31954), (910, 23351), (1229, 17290), (1235, 17206), (1330, 15977), (1729, 12290), (2458, 8645), (2470, 8603), (3458, 6145)]