21591444

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{401}}^1\times {\mathrm{641}}^1$

素因数の和:1056

約数の個数: 48

約数和(自身を含む): 57810816

約数和(自身を除く): 36219372

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 401, 641, 802, 1203, 1282, 1604, 1923, 2406, 2564, 2807, 3846, 4487, 4812, 5614, 7692, 8421, 8974, 11228, 13461, 16842, 17948, 26922, 33684, 53844, 257041, 514082, 771123, 1028164, 1542246, 1799287, 3084492, 3598574, 5397861, 7197148, 10795722, 21591444]

約数ペア:

[(1, 21591444), (2, 10795722), (3, 7197148), (4, 5397861), (6, 3598574), (7, 3084492), (12, 1799287), (14, 1542246), (21, 1028164), (28, 771123), (42, 514082), (84, 257041), (401, 53844), (641, 33684), (802, 26922), (1203, 17948), (1282, 16842), (1604, 13461), (1923, 11228), (2406, 8974), (2564, 8421), (2807, 7692), (3846, 5614), (4487, 4812)]