20495280

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{6569}}^1$

素因数の和:6598

約数の個数: 80

約数和(自身を含む): 68433120

約数和(自身を除く): 47937840

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 80, 104, 120, 130, 156, 195, 208, 240, 260, 312, 390, 520, 624, 780, 1040, 1560, 3120, 6569, 13138, 19707, 26276, 32845, 39414, 52552, 65690, 78828, 85397, 98535, 105104, 131380, 157656, 170794, 197070, 256191, 262760, 315312, 341588, 394140, 426985, 512382, 525520, 683176, 788280, 853970, 1024764, 1280955, 1366352, 1576560, 1707940, 2049528, 2561910, 3415880, 4099056, 5123820, 6831760, 10247640, 20495280]

約数ペア:

[(1, 20495280), (2, 10247640), (3, 6831760), (4, 5123820), (5, 4099056), (6, 3415880), (8, 2561910), (10, 2049528), (12, 1707940), (13, 1576560), (15, 1366352), (16, 1280955), (20, 1024764), (24, 853970), (26, 788280), (30, 683176), (39, 525520), (40, 512382), (48, 426985), (52, 394140), (60, 341588), (65, 315312), (78, 262760), (80, 256191), (104, 197070), (120, 170794), (130, 157656), (156, 131380), (195, 105104), (208, 98535), (240, 85397), (260, 78828), (312, 65690), (390, 52552), (520, 39414), (624, 32845), (780, 26276), (1040, 19707), (1560, 13138), (3120, 6569)]