21257664

素因数分解:

$2^6\times 3^1\times {\mathrm{53}}^1\times {\mathrm{2089}}^1$

素因数の和:2157

約数の個数: 56

約数和(自身を含む): 57332880

約数和(自身を除く): 36075216

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 53, 64, 96, 106, 159, 192, 212, 318, 424, 636, 848, 1272, 1696, 2089, 2544, 3392, 4178, 5088, 6267, 8356, 10176, 12534, 16712, 25068, 33424, 50136, 66848, 100272, 110717, 133696, 200544, 221434, 332151, 401088, 442868, 664302, 885736, 1328604, 1771472, 2657208, 3542944, 5314416, 7085888, 10628832, 21257664]

約数ペア:

[(1, 21257664), (2, 10628832), (3, 7085888), (4, 5314416), (6, 3542944), (8, 2657208), (12, 1771472), (16, 1328604), (24, 885736), (32, 664302), (48, 442868), (53, 401088), (64, 332151), (96, 221434), (106, 200544), (159, 133696), (192, 110717), (212, 100272), (318, 66848), (424, 50136), (636, 33424), (848, 25068), (1272, 16712), (1696, 12534), (2089, 10176), (2544, 8356), (3392, 6267), (4178, 5088)]