21191600

素因数分解:

$2^4\times 5^2\times {\mathrm{31}}^1\times {\mathrm{1709}}^1$

素因数の和:1758

約数の個数: 60

約数和(自身を含む): 52585920

約数和(自身を除く): 31394320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 40, 50, 62, 80, 100, 124, 155, 200, 248, 310, 400, 496, 620, 775, 1240, 1550, 1709, 2480, 3100, 3418, 6200, 6836, 8545, 12400, 13672, 17090, 27344, 34180, 42725, 52979, 68360, 85450, 105958, 136720, 170900, 211916, 264895, 341800, 423832, 529790, 683600, 847664, 1059580, 1324475, 2119160, 2648950, 4238320, 5297900, 10595800, 21191600]

約数ペア:

[(1, 21191600), (2, 10595800), (4, 5297900), (5, 4238320), (8, 2648950), (10, 2119160), (16, 1324475), (20, 1059580), (25, 847664), (31, 683600), (40, 529790), (50, 423832), (62, 341800), (80, 264895), (100, 211916), (124, 170900), (155, 136720), (200, 105958), (248, 85450), (310, 68360), (400, 52979), (496, 42725), (620, 34180), (775, 27344), (1240, 17090), (1550, 13672), (1709, 12400), (2480, 8545), (3100, 6836), (3418, 6200)]