81393540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{18583}}^1$

素因数の和:18668

約数の個数: 48

約数和(自身を含む): 231036288

約数和(自身を除く): 149642748

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 73, 146, 219, 292, 365, 438, 730, 876, 1095, 1460, 2190, 4380, 18583, 37166, 55749, 74332, 92915, 111498, 185830, 222996, 278745, 371660, 557490, 1114980, 1356559, 2713118, 4069677, 5426236, 6782795, 8139354, 13565590, 16278708, 20348385, 27131180, 40696770, 81393540]

約数ペア:

[(1, 81393540), (2, 40696770), (3, 27131180), (4, 20348385), (5, 16278708), (6, 13565590), (10, 8139354), (12, 6782795), (15, 5426236), (20, 4069677), (30, 2713118), (60, 1356559), (73, 1114980), (146, 557490), (219, 371660), (292, 278745), (365, 222996), (438, 185830), (730, 111498), (876, 92915), (1095, 74332), (1460, 55749), (2190, 37166), (4380, 18583)]