21793590

素因数分解:

$2^1\times 3^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{887}}^1$

素因数の和:923

約数の個数: 128

約数和(自身を含む): 71608320

約数和(自身を除く): 49814730

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 13, 14, 15, 18, 21, 26, 27, 30, 35, 39, 42, 45, 54, 63, 65, 70, 78, 90, 91, 105, 117, 126, 130, 135, 182, 189, 195, 210, 234, 270, 273, 315, 351, 378, 390, 455, 546, 585, 630, 702, 819, 887, 910, 945, 1170, 1365, 1638, 1755, 1774, 1890, 2457, 2661, 2730, 3510, 4095, 4435, 4914, 5322, 6209, 7983, 8190, 8870, 11531, 12285, 12418, 13305, 15966, 18627, 23062, 23949, 24570, 26610, 31045, 34593, 37254, 39915, 47898, 55881, 57655, 62090, 69186, 79830, 80717, 93135, 103779, 111762, 115310, 119745, 161434, 167643, 172965, 186270, 207558, 239490, 242151, 279405, 311337, 335286, 345930, 403585, 484302, 518895, 558810, 622674, 726453, 807170, 838215, 1037790, 1210755, 1452906, 1556685, 1676430, 2179359, 2421510, 3113370, 3632265, 4358718, 7264530, 10896795, 21793590]

約数ペア:

[(1, 21793590), (2, 10896795), (3, 7264530), (5, 4358718), (6, 3632265), (7, 3113370), (9, 2421510), (10, 2179359), (13, 1676430), (14, 1556685), (15, 1452906), (18, 1210755), (21, 1037790), (26, 838215), (27, 807170), (30, 726453), (35, 622674), (39, 558810), (42, 518895), (45, 484302), (54, 403585), (63, 345930), (65, 335286), (70, 311337), (78, 279405), (90, 242151), (91, 239490), (105, 207558), (117, 186270), (126, 172965), (130, 167643), (135, 161434), (182, 119745), (189, 115310), (195, 111762), (210, 103779), (234, 93135), (270, 80717), (273, 79830), (315, 69186), (351, 62090), (378, 57655), (390, 55881), (455, 47898), (546, 39915), (585, 37254), (630, 34593), (702, 31045), (819, 26610), (887, 24570), (910, 23949), (945, 23062), (1170, 18627), (1365, 15966), (1638, 13305), (1755, 12418), (1774, 12285), (1890, 11531), (2457, 8870), (2661, 8190), (2730, 7983), (3510, 6209), (4095, 5322), (4435, 4914)]