20013224

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{613}}^1$

素因数の和:690

約数の個数: 64

約数和(自身を含む): 47744640

約数和(自身を除く): 27731416

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 53, 56, 77, 88, 106, 154, 212, 308, 371, 424, 583, 613, 616, 742, 1166, 1226, 1484, 2332, 2452, 2968, 4081, 4291, 4664, 4904, 6743, 8162, 8582, 13486, 16324, 17164, 26972, 32489, 32648, 34328, 47201, 53944, 64978, 94402, 129956, 188804, 227423, 259912, 357379, 377608, 454846, 714758, 909692, 1429516, 1819384, 2501653, 2859032, 5003306, 10006612, 20013224]

約数ペア:

[(1, 20013224), (2, 10006612), (4, 5003306), (7, 2859032), (8, 2501653), (11, 1819384), (14, 1429516), (22, 909692), (28, 714758), (44, 454846), (53, 377608), (56, 357379), (77, 259912), (88, 227423), (106, 188804), (154, 129956), (212, 94402), (308, 64978), (371, 53944), (424, 47201), (583, 34328), (613, 32648), (616, 32489), (742, 26972), (1166, 17164), (1226, 16324), (1484, 13486), (2332, 8582), (2452, 8162), (2968, 6743), (4081, 4904), (4291, 4664)]