21691410

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{55619}}^1$

素因数の和:55642

約数の個数: 32

約数和(自身を含む): 56064960

約数和(自身を除く): 34373550

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 55619, 111238, 166857, 278095, 333714, 556190, 723047, 834285, 1446094, 1668570, 2169141, 3615235, 4338282, 7230470, 10845705, 21691410]

約数ペア:

[(1, 21691410), (2, 10845705), (3, 7230470), (5, 4338282), (6, 3615235), (10, 2169141), (13, 1668570), (15, 1446094), (26, 834285), (30, 723047), (39, 556190), (65, 333714), (78, 278095), (130, 166857), (195, 111238), (390, 55619)]