217528040

素因数分解:

$2^3\times 5^1\times {\mathrm{419}}^1\times {\mathrm{12979}}^1$

素因数の和:13409

約数の個数: 32

約数和(自身を含む): 490644000

約数和(自身を除く): 273115960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 419, 838, 1676, 2095, 3352, 4190, 8380, 12979, 16760, 25958, 51916, 64895, 103832, 129790, 259580, 519160, 5438201, 10876402, 21752804, 27191005, 43505608, 54382010, 108764020, 217528040]

約数ペア:

[(1, 217528040), (2, 108764020), (4, 54382010), (5, 43505608), (8, 27191005), (10, 21752804), (20, 10876402), (40, 5438201), (419, 519160), (838, 259580), (1676, 129790), (2095, 103832), (3352, 64895), (4190, 51916), (8380, 25958), (12979, 16760)]