28121750440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{1447}}^1\times {\mathrm{2239}}^1$

素因数の和:3735

約数の個数: 128

約数和(自身を含む): 74730700800

約数和(自身を除く): 46608950360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 56, 62, 70, 124, 140, 155, 217, 248, 280, 310, 434, 620, 868, 1085, 1240, 1447, 1736, 2170, 2239, 2894, 4340, 4478, 5788, 7235, 8680, 8956, 10129, 11195, 11576, 14470, 15673, 17912, 20258, 22390, 28940, 31346, 40516, 44780, 44857, 50645, 57880, 62692, 69409, 78365, 81032, 89560, 89714, 101290, 125384, 138818, 156730, 179428, 202580, 224285, 277636, 313460, 313999, 347045, 358856, 405160, 448570, 485863, 555272, 626920, 627998, 694090, 897140, 971726, 1255996, 1388180, 1569995, 1794280, 1943452, 2429315, 2511992, 2776360, 3139990, 3239833, 3886904, 4858630, 6279980, 6479666, 9717260, 12559960, 12959332, 16199165, 19434520, 22678831, 25918664, 32398330, 45357662, 64796660, 90715324, 100434823, 113394155, 129593320, 181430648, 200869646, 226788310, 401739292, 453576620, 502174115, 703043761, 803478584, 907153240, 1004348230, 1406087522, 2008696460, 2812175044, 3515218805, 4017392920, 5624350088, 7030437610, 14060875220, 28121750440]

約数ペア:

[(1, 28121750440), (2, 14060875220), (4, 7030437610), (5, 5624350088), (7, 4017392920), (8, 3515218805), (10, 2812175044), (14, 2008696460), (20, 1406087522), (28, 1004348230), (31, 907153240), (35, 803478584), (40, 703043761), (56, 502174115), (62, 453576620), (70, 401739292), (124, 226788310), (140, 200869646), (155, 181430648), (217, 129593320), (248, 113394155), (280, 100434823), (310, 90715324), (434, 64796660), (620, 45357662), (868, 32398330), (1085, 25918664), (1240, 22678831), (1447, 19434520), (1736, 16199165), (2170, 12959332), (2239, 12559960), (2894, 9717260), (4340, 6479666), (4478, 6279980), (5788, 4858630), (7235, 3886904), (8680, 3239833), (8956, 3139990), (10129, 2776360), (11195, 2511992), (11576, 2429315), (14470, 1943452), (15673, 1794280), (17912, 1569995), (20258, 1388180), (22390, 1255996), (28940, 971726), (31346, 897140), (40516, 694090), (44780, 627998), (44857, 626920), (50645, 555272), (57880, 485863), (62692, 448570), (69409, 405160), (78365, 358856), (81032, 347045), (89560, 313999), (89714, 313460), (101290, 277636), (125384, 224285), (138818, 202580), (156730, 179428)]