18557440

素因数分解:

$2^9\times 5^1\times {\mathrm{11}}^1\times {\mathrm{659}}^1$

素因数の和:693

約数の個数: 80

約数和(自身を含む): 48612960

約数和(自身を除く): 30055520

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 128, 160, 176, 220, 256, 320, 352, 440, 512, 640, 659, 704, 880, 1280, 1318, 1408, 1760, 2560, 2636, 2816, 3295, 3520, 5272, 5632, 6590, 7040, 7249, 10544, 13180, 14080, 14498, 21088, 26360, 28160, 28996, 36245, 42176, 52720, 57992, 72490, 84352, 105440, 115984, 144980, 168704, 210880, 231968, 289960, 337408, 421760, 463936, 579920, 843520, 927872, 1159840, 1687040, 1855744, 2319680, 3711488, 4639360, 9278720, 18557440]

約数ペア:

[(1, 18557440), (2, 9278720), (4, 4639360), (5, 3711488), (8, 2319680), (10, 1855744), (11, 1687040), (16, 1159840), (20, 927872), (22, 843520), (32, 579920), (40, 463936), (44, 421760), (55, 337408), (64, 289960), (80, 231968), (88, 210880), (110, 168704), (128, 144980), (160, 115984), (176, 105440), (220, 84352), (256, 72490), (320, 57992), (352, 52720), (440, 42176), (512, 36245), (640, 28996), (659, 28160), (704, 26360), (880, 21088), (1280, 14498), (1318, 14080), (1408, 13180), (1760, 10544), (2560, 7249), (2636, 7040), (2816, 6590), (3295, 5632), (3520, 5272)]