20840640

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1277}}^1$

素因数の和:1314

約数の個数: 112

約数和(自身を含む): 70116192

約数和(自身を除く): 49275552

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 30, 32, 34, 40, 48, 51, 60, 64, 68, 80, 85, 96, 102, 120, 136, 160, 170, 192, 204, 240, 255, 272, 320, 340, 408, 480, 510, 544, 680, 816, 960, 1020, 1088, 1277, 1360, 1632, 2040, 2554, 2720, 3264, 3831, 4080, 5108, 5440, 6385, 7662, 8160, 10216, 12770, 15324, 16320, 19155, 20432, 21709, 25540, 30648, 38310, 40864, 43418, 51080, 61296, 65127, 76620, 81728, 86836, 102160, 108545, 122592, 130254, 153240, 173672, 204320, 217090, 245184, 260508, 306480, 325635, 347344, 408640, 434180, 521016, 612960, 651270, 694688, 868360, 1042032, 1225920, 1302540, 1389376, 1736720, 2084064, 2605080, 3473440, 4168128, 5210160, 6946880, 10420320, 20840640]

約数ペア:

[(1, 20840640), (2, 10420320), (3, 6946880), (4, 5210160), (5, 4168128), (6, 3473440), (8, 2605080), (10, 2084064), (12, 1736720), (15, 1389376), (16, 1302540), (17, 1225920), (20, 1042032), (24, 868360), (30, 694688), (32, 651270), (34, 612960), (40, 521016), (48, 434180), (51, 408640), (60, 347344), (64, 325635), (68, 306480), (80, 260508), (85, 245184), (96, 217090), (102, 204320), (120, 173672), (136, 153240), (160, 130254), (170, 122592), (192, 108545), (204, 102160), (240, 86836), (255, 81728), (272, 76620), (320, 65127), (340, 61296), (408, 51080), (480, 43418), (510, 40864), (544, 38310), (680, 30648), (816, 25540), (960, 21709), (1020, 20432), (1088, 19155), (1277, 16320), (1360, 15324), (1632, 12770), (2040, 10216), (2554, 8160), (2720, 7662), (3264, 6385), (3831, 5440), (4080, 5108)]