20188003840

素因数分解:

$2^9\times 5^1\times {\mathrm{919}}^1\times {\mathrm{8581}}^1$

素因数の和:9523

約数の個数: 80

約数和(自身を含む): 48462210720

約数和(自身を除く): 28274206880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 919, 1280, 1838, 2560, 3676, 4595, 7352, 8581, 9190, 14704, 17162, 18380, 29408, 34324, 36760, 42905, 58816, 68648, 73520, 85810, 117632, 137296, 147040, 171620, 235264, 274592, 294080, 343240, 470528, 549184, 588160, 686480, 1098368, 1176320, 1372960, 2196736, 2352640, 2745920, 4393472, 5491840, 7885939, 10983680, 15771878, 21967360, 31543756, 39429695, 63087512, 78859390, 126175024, 157718780, 252350048, 315437560, 504700096, 630875120, 1009400192, 1261750240, 2018800384, 2523500480, 4037600768, 5047000960, 10094001920, 20188003840]

約数ペア:

[(1, 20188003840), (2, 10094001920), (4, 5047000960), (5, 4037600768), (8, 2523500480), (10, 2018800384), (16, 1261750240), (20, 1009400192), (32, 630875120), (40, 504700096), (64, 315437560), (80, 252350048), (128, 157718780), (160, 126175024), (256, 78859390), (320, 63087512), (512, 39429695), (640, 31543756), (919, 21967360), (1280, 15771878), (1838, 10983680), (2560, 7885939), (3676, 5491840), (4595, 4393472), (7352, 2745920), (8581, 2352640), (9190, 2196736), (14704, 1372960), (17162, 1176320), (18380, 1098368), (29408, 686480), (34324, 588160), (36760, 549184), (42905, 470528), (58816, 343240), (68648, 294080), (73520, 274592), (85810, 235264), (117632, 171620), (137296, 147040)]