21521130

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{317}}^1$

素因数の和:431

約数の個数: 64

約数和(自身を含む): 54217728

約数和(自身を除く): 32696598

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 31, 62, 73, 93, 146, 155, 186, 219, 310, 317, 365, 438, 465, 634, 730, 930, 951, 1095, 1585, 1902, 2190, 2263, 3170, 4526, 4755, 6789, 9510, 9827, 11315, 13578, 19654, 22630, 23141, 29481, 33945, 46282, 49135, 58962, 67890, 69423, 98270, 115705, 138846, 147405, 231410, 294810, 347115, 694230, 717371, 1434742, 2152113, 3586855, 4304226, 7173710, 10760565, 21521130]

約数ペア:

[(1, 21521130), (2, 10760565), (3, 7173710), (5, 4304226), (6, 3586855), (10, 2152113), (15, 1434742), (30, 717371), (31, 694230), (62, 347115), (73, 294810), (93, 231410), (146, 147405), (155, 138846), (186, 115705), (219, 98270), (310, 69423), (317, 67890), (365, 58962), (438, 49135), (465, 46282), (634, 33945), (730, 29481), (930, 23141), (951, 22630), (1095, 19654), (1585, 13578), (1902, 11315), (2190, 9827), (2263, 9510), (3170, 6789), (4526, 4755)]