18969990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{383}}^1$

素因数の和:533

約数の個数: 64

約数和(自身を含む): 49545216

約数和(自身を除く): 30575226

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 127, 130, 195, 254, 381, 383, 390, 635, 762, 766, 1149, 1270, 1651, 1905, 1915, 2298, 3302, 3810, 3830, 4953, 4979, 5745, 8255, 9906, 9958, 11490, 14937, 16510, 24765, 24895, 29874, 48641, 49530, 49790, 74685, 97282, 145923, 149370, 243205, 291846, 486410, 632333, 729615, 1264666, 1459230, 1896999, 3161665, 3793998, 6323330, 9484995, 18969990]

約数ペア:

[(1, 18969990), (2, 9484995), (3, 6323330), (5, 3793998), (6, 3161665), (10, 1896999), (13, 1459230), (15, 1264666), (26, 729615), (30, 632333), (39, 486410), (65, 291846), (78, 243205), (127, 149370), (130, 145923), (195, 97282), (254, 74685), (381, 49790), (383, 49530), (390, 48641), (635, 29874), (762, 24895), (766, 24765), (1149, 16510), (1270, 14937), (1651, 11490), (1905, 9958), (1915, 9906), (2298, 8255), (3302, 5745), (3810, 4979), (3830, 4953)]