21451380

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{607}}^1$

素因数の和:669

約数の個数: 96

約数和(自身を含む): 65372160

約数和(自身を除く): 43920780

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 31, 38, 57, 60, 62, 76, 93, 95, 114, 124, 155, 186, 190, 228, 285, 310, 372, 380, 465, 570, 589, 607, 620, 930, 1140, 1178, 1214, 1767, 1821, 1860, 2356, 2428, 2945, 3035, 3534, 3642, 5890, 6070, 7068, 7284, 8835, 9105, 11533, 11780, 12140, 17670, 18210, 18817, 23066, 34599, 35340, 36420, 37634, 46132, 56451, 57665, 69198, 75268, 94085, 112902, 115330, 138396, 172995, 188170, 225804, 230660, 282255, 345990, 357523, 376340, 564510, 691980, 715046, 1072569, 1129020, 1430092, 1787615, 2145138, 3575230, 4290276, 5362845, 7150460, 10725690, 21451380]

約数ペア:

[(1, 21451380), (2, 10725690), (3, 7150460), (4, 5362845), (5, 4290276), (6, 3575230), (10, 2145138), (12, 1787615), (15, 1430092), (19, 1129020), (20, 1072569), (30, 715046), (31, 691980), (38, 564510), (57, 376340), (60, 357523), (62, 345990), (76, 282255), (93, 230660), (95, 225804), (114, 188170), (124, 172995), (155, 138396), (186, 115330), (190, 112902), (228, 94085), (285, 75268), (310, 69198), (372, 57665), (380, 56451), (465, 46132), (570, 37634), (589, 36420), (607, 35340), (620, 34599), (930, 23066), (1140, 18817), (1178, 18210), (1214, 17670), (1767, 12140), (1821, 11780), (1860, 11533), (2356, 9105), (2428, 8835), (2945, 7284), (3035, 7068), (3534, 6070), (3642, 5890)]