21391110

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{389}}^1$

素因数の和:462

約数の個数: 96

約数和(自身を含む): 61326720

約数和(自身を除く): 39935610

約数列:

[1, 2, 3, 5, 6, 9, 10, 13, 15, 18, 26, 30, 39, 45, 47, 65, 78, 90, 94, 117, 130, 141, 195, 234, 235, 282, 389, 390, 423, 470, 585, 611, 705, 778, 846, 1167, 1170, 1222, 1410, 1833, 1945, 2115, 2334, 3055, 3501, 3666, 3890, 4230, 5057, 5499, 5835, 6110, 7002, 9165, 10114, 10998, 11670, 15171, 17505, 18283, 18330, 25285, 27495, 30342, 35010, 36566, 45513, 50570, 54849, 54990, 75855, 91026, 91415, 109698, 151710, 164547, 182830, 227565, 237679, 274245, 329094, 455130, 475358, 548490, 713037, 822735, 1188395, 1426074, 1645470, 2139111, 2376790, 3565185, 4278222, 7130370, 10695555, 21391110]

約数ペア:

[(1, 21391110), (2, 10695555), (3, 7130370), (5, 4278222), (6, 3565185), (9, 2376790), (10, 2139111), (13, 1645470), (15, 1426074), (18, 1188395), (26, 822735), (30, 713037), (39, 548490), (45, 475358), (47, 455130), (65, 329094), (78, 274245), (90, 237679), (94, 227565), (117, 182830), (130, 164547), (141, 151710), (195, 109698), (234, 91415), (235, 91026), (282, 75855), (389, 54990), (390, 54849), (423, 50570), (470, 45513), (585, 36566), (611, 35010), (705, 30342), (778, 27495), (846, 25285), (1167, 18330), (1170, 18283), (1222, 17505), (1410, 15171), (1833, 11670), (1945, 10998), (2115, 10114), (2334, 9165), (3055, 7002), (3501, 6110), (3666, 5835), (3890, 5499), (4230, 5057)]