28758500

素因数分解:

$2^2\times 5^3\times {\mathrm{113}}^1\times {\mathrm{509}}^1$

素因数の和:641

約数の個数: 48

約数和(自身を含む): 63488880

約数和(自身を除く): 34730380

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 113, 125, 226, 250, 452, 500, 509, 565, 1018, 1130, 2036, 2260, 2545, 2825, 5090, 5650, 10180, 11300, 12725, 14125, 25450, 28250, 50900, 56500, 57517, 63625, 115034, 127250, 230068, 254500, 287585, 575170, 1150340, 1437925, 2875850, 5751700, 7189625, 14379250, 28758500]

約数ペア:

[(1, 28758500), (2, 14379250), (4, 7189625), (5, 5751700), (10, 2875850), (20, 1437925), (25, 1150340), (50, 575170), (100, 287585), (113, 254500), (125, 230068), (226, 127250), (250, 115034), (452, 63625), (500, 57517), (509, 56500), (565, 50900), (1018, 28250), (1130, 25450), (2036, 14125), (2260, 12725), (2545, 11300), (2825, 10180), (5090, 5650)]