28120720

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1$

素因数の和:113

約数の個数: 160

約数和(自身を含む): 77137920

約数和(自身を除く): 49017200

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 23, 29, 31, 34, 40, 46, 58, 62, 68, 80, 85, 92, 115, 116, 124, 136, 145, 155, 170, 184, 230, 232, 248, 272, 290, 310, 340, 368, 391, 460, 464, 493, 496, 527, 580, 620, 667, 680, 713, 782, 899, 920, 986, 1054, 1160, 1240, 1334, 1360, 1426, 1564, 1798, 1840, 1955, 1972, 2108, 2320, 2465, 2480, 2635, 2668, 2852, 3128, 3335, 3565, 3596, 3910, 3944, 4216, 4495, 4930, 5270, 5336, 5704, 6256, 6670, 7130, 7192, 7820, 7888, 8432, 8990, 9860, 10540, 10672, 11339, 11408, 12121, 13340, 14260, 14384, 15283, 15640, 17980, 19720, 20677, 21080, 22678, 24242, 26680, 28520, 30566, 31280, 35960, 39440, 41354, 42160, 45356, 48484, 53360, 56695, 57040, 60605, 61132, 71920, 76415, 82708, 90712, 96968, 103385, 113390, 121210, 122264, 152830, 165416, 181424, 193936, 206770, 226780, 242420, 244528, 305660, 330832, 351509, 413540, 453560, 484840, 611320, 703018, 827080, 907120, 969680, 1222640, 1406036, 1654160, 1757545, 2812072, 3515090, 5624144, 7030180, 14060360, 28120720]

約数ペア:

[(1, 28120720), (2, 14060360), (4, 7030180), (5, 5624144), (8, 3515090), (10, 2812072), (16, 1757545), (17, 1654160), (20, 1406036), (23, 1222640), (29, 969680), (31, 907120), (34, 827080), (40, 703018), (46, 611320), (58, 484840), (62, 453560), (68, 413540), (80, 351509), (85, 330832), (92, 305660), (115, 244528), (116, 242420), (124, 226780), (136, 206770), (145, 193936), (155, 181424), (170, 165416), (184, 152830), (230, 122264), (232, 121210), (248, 113390), (272, 103385), (290, 96968), (310, 90712), (340, 82708), (368, 76415), (391, 71920), (460, 61132), (464, 60605), (493, 57040), (496, 56695), (527, 53360), (580, 48484), (620, 45356), (667, 42160), (680, 41354), (713, 39440), (782, 35960), (899, 31280), (920, 30566), (986, 28520), (1054, 26680), (1160, 24242), (1240, 22678), (1334, 21080), (1360, 20677), (1426, 19720), (1564, 17980), (1798, 15640), (1840, 15283), (1955, 14384), (1972, 14260), (2108, 13340), (2320, 12121), (2465, 11408), (2480, 11339), (2635, 10672), (2668, 10540), (2852, 9860), (3128, 8990), (3335, 8432), (3565, 7888), (3596, 7820), (3910, 7192), (3944, 7130), (4216, 6670), (4495, 6256), (4930, 5704), (5270, 5336)]