15818840

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{541}}^1$

素因数の和:612

約数の個数: 64

約数和(自身を含む): 38633760

約数和(自身を除く): 22814920

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 43, 68, 85, 86, 136, 170, 172, 215, 340, 344, 430, 541, 680, 731, 860, 1082, 1462, 1720, 2164, 2705, 2924, 3655, 4328, 5410, 5848, 7310, 9197, 10820, 14620, 18394, 21640, 23263, 29240, 36788, 45985, 46526, 73576, 91970, 93052, 116315, 183940, 186104, 232630, 367880, 395471, 465260, 790942, 930520, 1581884, 1977355, 3163768, 3954710, 7909420, 15818840]

約数ペア:

[(1, 15818840), (2, 7909420), (4, 3954710), (5, 3163768), (8, 1977355), (10, 1581884), (17, 930520), (20, 790942), (34, 465260), (40, 395471), (43, 367880), (68, 232630), (85, 186104), (86, 183940), (136, 116315), (170, 93052), (172, 91970), (215, 73576), (340, 46526), (344, 45985), (430, 36788), (541, 29240), (680, 23263), (731, 21640), (860, 18394), (1082, 14620), (1462, 10820), (1720, 9197), (2164, 7310), (2705, 5848), (2924, 5410), (3655, 4328)]