81475380

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{64663}}^1$

素因数の和:64685

約数の個数: 72

約数和(自身を含む): 282452352

約数和(自身を除く): 200976972

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 64663, 129326, 193989, 258652, 323315, 387978, 452641, 581967, 646630, 775956, 905282, 969945, 1163934, 1293260, 1357923, 1810564, 1939890, 2263205, 2327868, 2715846, 2909835, 3879780, 4073769, 4526410, 5431692, 5819670, 6789615, 8147538, 9052820, 11639340, 13579230, 16295076, 20368845, 27158460, 40737690, 81475380]

約数ペア:

[(1, 81475380), (2, 40737690), (3, 27158460), (4, 20368845), (5, 16295076), (6, 13579230), (7, 11639340), (9, 9052820), (10, 8147538), (12, 6789615), (14, 5819670), (15, 5431692), (18, 4526410), (20, 4073769), (21, 3879780), (28, 2909835), (30, 2715846), (35, 2327868), (36, 2263205), (42, 1939890), (45, 1810564), (60, 1357923), (63, 1293260), (70, 1163934), (84, 969945), (90, 905282), (105, 775956), (126, 646630), (140, 581967), (180, 452641), (210, 387978), (252, 323315), (315, 258652), (420, 193989), (630, 129326), (1260, 64663)]