15181920

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{811}}^1$

素因数の和:845

約数の個数: 144

約数和(自身を含む): 55862352

約数和(自身を除く): 40680432

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 30, 32, 36, 39, 40, 45, 48, 52, 60, 65, 72, 78, 80, 90, 96, 104, 117, 120, 130, 144, 156, 160, 180, 195, 208, 234, 240, 260, 288, 312, 360, 390, 416, 468, 480, 520, 585, 624, 720, 780, 811, 936, 1040, 1170, 1248, 1440, 1560, 1622, 1872, 2080, 2340, 2433, 3120, 3244, 3744, 4055, 4680, 4866, 6240, 6488, 7299, 8110, 9360, 9732, 10543, 12165, 12976, 14598, 16220, 18720, 19464, 21086, 24330, 25952, 29196, 31629, 32440, 36495, 38928, 42172, 48660, 52715, 58392, 63258, 64880, 72990, 77856, 84344, 94887, 97320, 105430, 116784, 126516, 129760, 145980, 158145, 168688, 189774, 194640, 210860, 233568, 253032, 291960, 316290, 337376, 379548, 389280, 421720, 474435, 506064, 583920, 632580, 759096, 843440, 948870, 1012128, 1167840, 1265160, 1518192, 1686880, 1897740, 2530320, 3036384, 3795480, 5060640, 7590960, 15181920]

約数ペア:

[(1, 15181920), (2, 7590960), (3, 5060640), (4, 3795480), (5, 3036384), (6, 2530320), (8, 1897740), (9, 1686880), (10, 1518192), (12, 1265160), (13, 1167840), (15, 1012128), (16, 948870), (18, 843440), (20, 759096), (24, 632580), (26, 583920), (30, 506064), (32, 474435), (36, 421720), (39, 389280), (40, 379548), (45, 337376), (48, 316290), (52, 291960), (60, 253032), (65, 233568), (72, 210860), (78, 194640), (80, 189774), (90, 168688), (96, 158145), (104, 145980), (117, 129760), (120, 126516), (130, 116784), (144, 105430), (156, 97320), (160, 94887), (180, 84344), (195, 77856), (208, 72990), (234, 64880), (240, 63258), (260, 58392), (288, 52715), (312, 48660), (360, 42172), (390, 38928), (416, 36495), (468, 32440), (480, 31629), (520, 29196), (585, 25952), (624, 24330), (720, 21086), (780, 19464), (811, 18720), (936, 16220), (1040, 14598), (1170, 12976), (1248, 12165), (1440, 10543), (1560, 9732), (1622, 9360), (1872, 8110), (2080, 7299), (2340, 6488), (2433, 6240), (3120, 4866), (3244, 4680), (3744, 4055)]