81728920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{22453}}^1$

素因数の和:22484

約数の個数: 64

約数和(自身を含む): 226336320

約数和(自身を除く): 144607400

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 364, 455, 520, 728, 910, 1820, 3640, 22453, 44906, 89812, 112265, 157171, 179624, 224530, 291889, 314342, 449060, 583778, 628684, 785855, 898120, 1167556, 1257368, 1459445, 1571710, 2043223, 2335112, 2918890, 3143420, 4086446, 5837780, 6286840, 8172892, 10216115, 11675560, 16345784, 20432230, 40864460, 81728920]

約数ペア:

[(1, 81728920), (2, 40864460), (4, 20432230), (5, 16345784), (7, 11675560), (8, 10216115), (10, 8172892), (13, 6286840), (14, 5837780), (20, 4086446), (26, 3143420), (28, 2918890), (35, 2335112), (40, 2043223), (52, 1571710), (56, 1459445), (65, 1257368), (70, 1167556), (91, 898120), (104, 785855), (130, 628684), (140, 583778), (182, 449060), (260, 314342), (280, 291889), (364, 224530), (455, 179624), (520, 157171), (728, 112265), (910, 89812), (1820, 44906), (3640, 22453)]