21512760

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{5783}}^1$

素因数の和:5828

約数の個数: 64

約数和(自身を含む): 66631680

約数和(自身を除く): 45118920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 31, 40, 60, 62, 93, 120, 124, 155, 186, 248, 310, 372, 465, 620, 744, 930, 1240, 1860, 3720, 5783, 11566, 17349, 23132, 28915, 34698, 46264, 57830, 69396, 86745, 115660, 138792, 173490, 179273, 231320, 346980, 358546, 537819, 693960, 717092, 896365, 1075638, 1434184, 1792730, 2151276, 2689095, 3585460, 4302552, 5378190, 7170920, 10756380, 21512760]

約数ペア:

[(1, 21512760), (2, 10756380), (3, 7170920), (4, 5378190), (5, 4302552), (6, 3585460), (8, 2689095), (10, 2151276), (12, 1792730), (15, 1434184), (20, 1075638), (24, 896365), (30, 717092), (31, 693960), (40, 537819), (60, 358546), (62, 346980), (93, 231320), (120, 179273), (124, 173490), (155, 138792), (186, 115660), (248, 86745), (310, 69396), (372, 57830), (465, 46264), (620, 34698), (744, 28915), (930, 23132), (1240, 17349), (1860, 11566), (3720, 5783)]