21363420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{449}}^1$

素因数の和:535

約数の個数: 96

約数和(自身を含む): 65620800

約数和(自身を除く): 44257380

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 61, 65, 78, 122, 130, 156, 183, 195, 244, 260, 305, 366, 390, 449, 610, 732, 780, 793, 898, 915, 1220, 1347, 1586, 1796, 1830, 2245, 2379, 2694, 3172, 3660, 3965, 4490, 4758, 5388, 5837, 6735, 7930, 8980, 9516, 11674, 11895, 13470, 15860, 17511, 23348, 23790, 26940, 27389, 29185, 35022, 47580, 54778, 58370, 70044, 82167, 87555, 109556, 116740, 136945, 164334, 175110, 273890, 328668, 350220, 356057, 410835, 547780, 712114, 821670, 1068171, 1424228, 1643340, 1780285, 2136342, 3560570, 4272684, 5340855, 7121140, 10681710, 21363420]

約数ペア:

[(1, 21363420), (2, 10681710), (3, 7121140), (4, 5340855), (5, 4272684), (6, 3560570), (10, 2136342), (12, 1780285), (13, 1643340), (15, 1424228), (20, 1068171), (26, 821670), (30, 712114), (39, 547780), (52, 410835), (60, 356057), (61, 350220), (65, 328668), (78, 273890), (122, 175110), (130, 164334), (156, 136945), (183, 116740), (195, 109556), (244, 87555), (260, 82167), (305, 70044), (366, 58370), (390, 54778), (449, 47580), (610, 35022), (732, 29185), (780, 27389), (793, 26940), (898, 23790), (915, 23348), (1220, 17511), (1347, 15860), (1586, 13470), (1796, 11895), (1830, 11674), (2245, 9516), (2379, 8980), (2694, 7930), (3172, 6735), (3660, 5837), (3965, 5388), (4490, 4758)]