245471240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{439}}^1\times {\mathrm{1997}}^1$

素因数の和:2454

約数の個数: 64

約数和(自身を含む): 632966400

約数和(自身を除く): 387495160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 439, 878, 1756, 1997, 2195, 3073, 3512, 3994, 4390, 6146, 7988, 8780, 9985, 12292, 13979, 15365, 15976, 17560, 19970, 24584, 27958, 30730, 39940, 55916, 61460, 69895, 79880, 111832, 122920, 139790, 279580, 559160, 876683, 1753366, 3506732, 4383415, 6136781, 7013464, 8766830, 12273562, 17533660, 24547124, 30683905, 35067320, 49094248, 61367810, 122735620, 245471240]

約数ペア:

[(1, 245471240), (2, 122735620), (4, 61367810), (5, 49094248), (7, 35067320), (8, 30683905), (10, 24547124), (14, 17533660), (20, 12273562), (28, 8766830), (35, 7013464), (40, 6136781), (56, 4383415), (70, 3506732), (140, 1753366), (280, 876683), (439, 559160), (878, 279580), (1756, 139790), (1997, 122920), (2195, 111832), (3073, 79880), (3512, 69895), (3994, 61460), (4390, 55916), (6146, 39940), (7988, 30730), (8780, 27958), (9985, 24584), (12292, 19970), (13979, 17560), (15365, 15976)]