28904480

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^2\times {\mathrm{1493}}^1$

素因数の和:1530

約数の個数: 72

約数和(自身を含む): 75109356

約数和(自身を除く): 46204876

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 121, 160, 176, 220, 242, 352, 440, 484, 605, 880, 968, 1210, 1493, 1760, 1936, 2420, 2986, 3872, 4840, 5972, 7465, 9680, 11944, 14930, 16423, 19360, 23888, 29860, 32846, 47776, 59720, 65692, 82115, 119440, 131384, 164230, 180653, 238880, 262768, 328460, 361306, 525536, 656920, 722612, 903265, 1313840, 1445224, 1806530, 2627680, 2890448, 3613060, 5780896, 7226120, 14452240, 28904480]

約数ペア:

[(1, 28904480), (2, 14452240), (4, 7226120), (5, 5780896), (8, 3613060), (10, 2890448), (11, 2627680), (16, 1806530), (20, 1445224), (22, 1313840), (32, 903265), (40, 722612), (44, 656920), (55, 525536), (80, 361306), (88, 328460), (110, 262768), (121, 238880), (160, 180653), (176, 164230), (220, 131384), (242, 119440), (352, 82115), (440, 65692), (484, 59720), (605, 47776), (880, 32846), (968, 29860), (1210, 23888), (1493, 19360), (1760, 16423), (1936, 14930), (2420, 11944), (2986, 9680), (3872, 7465), (4840, 5972)]