156619180

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{389}}^1\times {\mathrm{491}}^1$

素因数の和:930

約数の個数: 48

約数和(自身を含む): 338476320

約数和(自身を除く): 181857140

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 389, 410, 491, 778, 820, 982, 1556, 1945, 1964, 2455, 3890, 4910, 7780, 9820, 15949, 20131, 31898, 40262, 63796, 79745, 80524, 100655, 159490, 190999, 201310, 318980, 381998, 402620, 763996, 954995, 1909990, 3819980, 7830959, 15661918, 31323836, 39154795, 78309590, 156619180]

約数ペア:

[(1, 156619180), (2, 78309590), (4, 39154795), (5, 31323836), (10, 15661918), (20, 7830959), (41, 3819980), (82, 1909990), (164, 954995), (205, 763996), (389, 402620), (410, 381998), (491, 318980), (778, 201310), (820, 190999), (982, 159490), (1556, 100655), (1945, 80524), (1964, 79745), (2455, 63796), (3890, 40262), (4910, 31898), (7780, 20131), (9820, 15949)]