20645160

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{4001}}^1$

素因数の和:4058

約数の個数: 64

約数和(自身を含む): 63391680

約数和(自身を除く): 42746520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 43, 60, 86, 120, 129, 172, 215, 258, 344, 430, 516, 645, 860, 1032, 1290, 1720, 2580, 4001, 5160, 8002, 12003, 16004, 20005, 24006, 32008, 40010, 48012, 60015, 80020, 96024, 120030, 160040, 172043, 240060, 344086, 480120, 516129, 688172, 860215, 1032258, 1376344, 1720430, 2064516, 2580645, 3440860, 4129032, 5161290, 6881720, 10322580, 20645160]

約数ペア:

[(1, 20645160), (2, 10322580), (3, 6881720), (4, 5161290), (5, 4129032), (6, 3440860), (8, 2580645), (10, 2064516), (12, 1720430), (15, 1376344), (20, 1032258), (24, 860215), (30, 688172), (40, 516129), (43, 480120), (60, 344086), (86, 240060), (120, 172043), (129, 160040), (172, 120030), (215, 96024), (258, 80020), (344, 60015), (430, 48012), (516, 40010), (645, 32008), (860, 24006), (1032, 20005), (1290, 16004), (1720, 12003), (2580, 8002), (4001, 5160)]