18561920

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{97}}^1$

素因数の和:152

約数の個数: 128

約数和(自身を含む): 50379840

約数和(自身を除く): 31817920

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 23, 26, 32, 40, 46, 52, 64, 65, 80, 92, 97, 104, 115, 128, 130, 160, 184, 194, 208, 230, 260, 299, 320, 368, 388, 416, 460, 485, 520, 598, 640, 736, 776, 832, 920, 970, 1040, 1196, 1261, 1472, 1495, 1552, 1664, 1840, 1940, 2080, 2231, 2392, 2522, 2944, 2990, 3104, 3680, 3880, 4160, 4462, 4784, 5044, 5980, 6208, 6305, 7360, 7760, 8320, 8924, 9568, 10088, 11155, 11960, 12416, 12610, 14720, 15520, 17848, 19136, 20176, 22310, 23920, 25220, 29003, 31040, 35696, 38272, 40352, 44620, 47840, 50440, 58006, 62080, 71392, 80704, 89240, 95680, 100880, 116012, 142784, 145015, 161408, 178480, 191360, 201760, 232024, 285568, 290030, 356960, 403520, 464048, 580060, 713920, 807040, 928096, 1160120, 1427840, 1856192, 2320240, 3712384, 4640480, 9280960, 18561920]

約数ペア:

[(1, 18561920), (2, 9280960), (4, 4640480), (5, 3712384), (8, 2320240), (10, 1856192), (13, 1427840), (16, 1160120), (20, 928096), (23, 807040), (26, 713920), (32, 580060), (40, 464048), (46, 403520), (52, 356960), (64, 290030), (65, 285568), (80, 232024), (92, 201760), (97, 191360), (104, 178480), (115, 161408), (128, 145015), (130, 142784), (160, 116012), (184, 100880), (194, 95680), (208, 89240), (230, 80704), (260, 71392), (299, 62080), (320, 58006), (368, 50440), (388, 47840), (416, 44620), (460, 40352), (485, 38272), (520, 35696), (598, 31040), (640, 29003), (736, 25220), (776, 23920), (832, 22310), (920, 20176), (970, 19136), (1040, 17848), (1196, 15520), (1261, 14720), (1472, 12610), (1495, 12416), (1552, 11960), (1664, 11155), (1840, 10088), (1940, 9568), (2080, 8924), (2231, 8320), (2392, 7760), (2522, 7360), (2944, 6305), (2990, 6208), (3104, 5980), (3680, 5044), (3880, 4784), (4160, 4462)]