21316240

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{24223}}^1$

素因数の和:24247

約数の個数: 40

約数和(自身を含む): 54067968

約数和(自身を除く): 32751728

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 24223, 48446, 96892, 121115, 193784, 242230, 266453, 387568, 484460, 532906, 968920, 1065812, 1332265, 1937840, 2131624, 2664530, 4263248, 5329060, 10658120, 21316240]

約数ペア:

[(1, 21316240), (2, 10658120), (4, 5329060), (5, 4263248), (8, 2664530), (10, 2131624), (11, 1937840), (16, 1332265), (20, 1065812), (22, 968920), (40, 532906), (44, 484460), (55, 387568), (80, 266453), (88, 242230), (110, 193784), (176, 121115), (220, 96892), (440, 48446), (880, 24223)]