21413898

素因数分解:

$2^1\times 3^2\times {\mathrm{11}}^1\times {\mathrm{37}}^2\times {\mathrm{79}}^1$

素因数の和:172

約数の個数: 72

約数和(自身を含む): 52678080

約数和(自身を除く): 31264182

約数列:

[1, 2, 3, 6, 9, 11, 18, 22, 33, 37, 66, 74, 79, 99, 111, 158, 198, 222, 237, 333, 407, 474, 666, 711, 814, 869, 1221, 1369, 1422, 1738, 2442, 2607, 2738, 2923, 3663, 4107, 5214, 5846, 7326, 7821, 8214, 8769, 12321, 15059, 15642, 17538, 24642, 26307, 30118, 32153, 45177, 52614, 64306, 90354, 96459, 108151, 135531, 192918, 216302, 271062, 289377, 324453, 578754, 648906, 973359, 1189661, 1946718, 2379322, 3568983, 7137966, 10706949, 21413898]

約数ペア:

[(1, 21413898), (2, 10706949), (3, 7137966), (6, 3568983), (9, 2379322), (11, 1946718), (18, 1189661), (22, 973359), (33, 648906), (37, 578754), (66, 324453), (74, 289377), (79, 271062), (99, 216302), (111, 192918), (158, 135531), (198, 108151), (222, 96459), (237, 90354), (333, 64306), (407, 52614), (474, 45177), (666, 32153), (711, 30118), (814, 26307), (869, 24642), (1221, 17538), (1369, 15642), (1422, 15059), (1738, 12321), (2442, 8769), (2607, 8214), (2738, 7821), (2923, 7326), (3663, 5846), (4107, 5214)]