27980520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{431}}^1\times {\mathrm{541}}^1$

素因数の和:986

約数の個数: 64

約数和(自身を含む): 84291840

約数和(自身を除く): 56311320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 431, 541, 862, 1082, 1293, 1623, 1724, 2155, 2164, 2586, 2705, 3246, 3448, 4310, 4328, 5172, 5410, 6465, 6492, 8115, 8620, 10344, 10820, 12930, 12984, 16230, 17240, 21640, 25860, 32460, 51720, 64920, 233171, 466342, 699513, 932684, 1165855, 1399026, 1865368, 2331710, 2798052, 3497565, 4663420, 5596104, 6995130, 9326840, 13990260, 27980520]

約数ペア:

[(1, 27980520), (2, 13990260), (3, 9326840), (4, 6995130), (5, 5596104), (6, 4663420), (8, 3497565), (10, 2798052), (12, 2331710), (15, 1865368), (20, 1399026), (24, 1165855), (30, 932684), (40, 699513), (60, 466342), (120, 233171), (431, 64920), (541, 51720), (862, 32460), (1082, 25860), (1293, 21640), (1623, 17240), (1724, 16230), (2155, 12984), (2164, 12930), (2586, 10820), (2705, 10344), (3246, 8620), (3448, 8115), (4310, 6492), (4328, 6465), (5172, 5410)]