18970640

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1$

素因数の和:109

約数の個数: 160

約数和(自身を含む): 53434080

約数和(自身を除く): 34463440

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 26, 29, 34, 37, 40, 52, 58, 65, 68, 74, 80, 85, 104, 116, 130, 136, 145, 148, 170, 185, 208, 221, 232, 260, 272, 290, 296, 340, 370, 377, 442, 464, 481, 493, 520, 580, 592, 629, 680, 740, 754, 884, 962, 986, 1040, 1073, 1105, 1160, 1258, 1360, 1480, 1508, 1768, 1885, 1924, 1972, 2146, 2210, 2320, 2405, 2465, 2516, 2960, 3016, 3145, 3536, 3770, 3848, 3944, 4292, 4420, 4810, 4930, 5032, 5365, 6032, 6290, 6409, 7540, 7696, 7888, 8177, 8584, 8840, 9620, 9860, 10064, 10730, 12580, 12818, 13949, 15080, 16354, 17168, 17680, 18241, 19240, 19720, 21460, 25160, 25636, 27898, 30160, 32045, 32708, 36482, 38480, 39440, 40885, 42920, 50320, 51272, 55796, 64090, 65416, 69745, 72964, 81770, 85840, 91205, 102544, 111592, 128180, 130832, 139490, 145928, 163540, 182410, 223184, 237133, 256360, 278980, 291856, 327080, 364820, 474266, 512720, 557960, 654160, 729640, 948532, 1115920, 1185665, 1459280, 1897064, 2371330, 3794128, 4742660, 9485320, 18970640]

約数ペア:

[(1, 18970640), (2, 9485320), (4, 4742660), (5, 3794128), (8, 2371330), (10, 1897064), (13, 1459280), (16, 1185665), (17, 1115920), (20, 948532), (26, 729640), (29, 654160), (34, 557960), (37, 512720), (40, 474266), (52, 364820), (58, 327080), (65, 291856), (68, 278980), (74, 256360), (80, 237133), (85, 223184), (104, 182410), (116, 163540), (130, 145928), (136, 139490), (145, 130832), (148, 128180), (170, 111592), (185, 102544), (208, 91205), (221, 85840), (232, 81770), (260, 72964), (272, 69745), (290, 65416), (296, 64090), (340, 55796), (370, 51272), (377, 50320), (442, 42920), (464, 40885), (481, 39440), (493, 38480), (520, 36482), (580, 32708), (592, 32045), (629, 30160), (680, 27898), (740, 25636), (754, 25160), (884, 21460), (962, 19720), (986, 19240), (1040, 18241), (1073, 17680), (1105, 17168), (1160, 16354), (1258, 15080), (1360, 13949), (1480, 12818), (1508, 12580), (1768, 10730), (1885, 10064), (1924, 9860), (1972, 9620), (2146, 8840), (2210, 8584), (2320, 8177), (2405, 7888), (2465, 7696), (2516, 7540), (2960, 6409), (3016, 6290), (3145, 6032), (3536, 5365), (3770, 5032), (3848, 4930), (3944, 4810), (4292, 4420)]