20514720

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{541}}^1$

素因数の和:638

約数の個数: 96

約数和(自身を含む): 65560320

約数和(自身を除く): 45045600

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 79, 80, 96, 120, 158, 160, 237, 240, 316, 395, 474, 480, 541, 632, 790, 948, 1082, 1185, 1264, 1580, 1623, 1896, 2164, 2370, 2528, 2705, 3160, 3246, 3792, 4328, 4740, 5410, 6320, 6492, 7584, 8115, 8656, 9480, 10820, 12640, 12984, 16230, 17312, 18960, 21640, 25968, 32460, 37920, 42739, 43280, 51936, 64920, 85478, 86560, 128217, 129840, 170956, 213695, 256434, 259680, 341912, 427390, 512868, 641085, 683824, 854780, 1025736, 1282170, 1367648, 1709560, 2051472, 2564340, 3419120, 4102944, 5128680, 6838240, 10257360, 20514720]

約数ペア:

[(1, 20514720), (2, 10257360), (3, 6838240), (4, 5128680), (5, 4102944), (6, 3419120), (8, 2564340), (10, 2051472), (12, 1709560), (15, 1367648), (16, 1282170), (20, 1025736), (24, 854780), (30, 683824), (32, 641085), (40, 512868), (48, 427390), (60, 341912), (79, 259680), (80, 256434), (96, 213695), (120, 170956), (158, 129840), (160, 128217), (237, 86560), (240, 85478), (316, 64920), (395, 51936), (474, 43280), (480, 42739), (541, 37920), (632, 32460), (790, 25968), (948, 21640), (1082, 18960), (1185, 17312), (1264, 16230), (1580, 12984), (1623, 12640), (1896, 10820), (2164, 9480), (2370, 8656), (2528, 8115), (2705, 7584), (3160, 6492), (3246, 6320), (3792, 5410), (4328, 4740)]