28327880

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{97}}^1\times {\mathrm{149}}^1$

素因数の和:271

約数の個数: 96

約数和(自身を含む): 75411000

約数和(自身を除く): 47083120

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 97, 98, 140, 149, 194, 196, 245, 280, 298, 388, 392, 485, 490, 596, 679, 745, 776, 970, 980, 1043, 1192, 1358, 1490, 1940, 1960, 2086, 2716, 2980, 3395, 3880, 4172, 4753, 5215, 5432, 5960, 6790, 7301, 8344, 9506, 10430, 13580, 14453, 14602, 19012, 20860, 23765, 27160, 28906, 29204, 36505, 38024, 41720, 47530, 57812, 58408, 72265, 73010, 95060, 101171, 115624, 144530, 146020, 190120, 202342, 289060, 292040, 404684, 505855, 578120, 708197, 809368, 1011710, 1416394, 2023420, 2832788, 3540985, 4046840, 5665576, 7081970, 14163940, 28327880]

約数ペア:

[(1, 28327880), (2, 14163940), (4, 7081970), (5, 5665576), (7, 4046840), (8, 3540985), (10, 2832788), (14, 2023420), (20, 1416394), (28, 1011710), (35, 809368), (40, 708197), (49, 578120), (56, 505855), (70, 404684), (97, 292040), (98, 289060), (140, 202342), (149, 190120), (194, 146020), (196, 144530), (245, 115624), (280, 101171), (298, 95060), (388, 73010), (392, 72265), (485, 58408), (490, 57812), (596, 47530), (679, 41720), (745, 38024), (776, 36505), (970, 29204), (980, 28906), (1043, 27160), (1192, 23765), (1358, 20860), (1490, 19012), (1940, 14602), (1960, 14453), (2086, 13580), (2716, 10430), (2980, 9506), (3395, 8344), (3880, 7301), (4172, 6790), (4753, 5960), (5215, 5432)]