21533540

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{43}}^1\times {\mathrm{73}}^1$

素因数の和:146

約数の個数: 96

約数和(自身を含む): 54700800

約数和(自身を除く): 33167260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 43, 49, 70, 73, 86, 98, 140, 146, 172, 196, 215, 245, 292, 301, 343, 365, 430, 490, 511, 602, 686, 730, 860, 980, 1022, 1204, 1372, 1460, 1505, 1715, 2044, 2107, 2555, 3010, 3139, 3430, 3577, 4214, 5110, 6020, 6278, 6860, 7154, 8428, 10220, 10535, 12556, 14308, 14749, 15695, 17885, 21070, 21973, 25039, 29498, 31390, 35770, 42140, 43946, 50078, 58996, 62780, 71540, 73745, 87892, 100156, 109865, 125195, 147490, 153811, 219730, 250390, 294980, 307622, 439460, 500780, 615244, 769055, 1076677, 1538110, 2153354, 3076220, 4306708, 5383385, 10766770, 21533540]

約数ペア:

[(1, 21533540), (2, 10766770), (4, 5383385), (5, 4306708), (7, 3076220), (10, 2153354), (14, 1538110), (20, 1076677), (28, 769055), (35, 615244), (43, 500780), (49, 439460), (70, 307622), (73, 294980), (86, 250390), (98, 219730), (140, 153811), (146, 147490), (172, 125195), (196, 109865), (215, 100156), (245, 87892), (292, 73745), (301, 71540), (343, 62780), (365, 58996), (430, 50078), (490, 43946), (511, 42140), (602, 35770), (686, 31390), (730, 29498), (860, 25039), (980, 21973), (1022, 21070), (1204, 17885), (1372, 15695), (1460, 14749), (1505, 14308), (1715, 12556), (2044, 10535), (2107, 10220), (2555, 8428), (3010, 7154), (3139, 6860), (3430, 6278), (3577, 6020), (4214, 5110)]