208341250

素因数分解:

$2^1\times 5^4\times {\mathrm{13}}^1\times {\mathrm{12821}}^1$

素因数の和:12856

約数の個数: 40

約数和(自身を含む): 420587244

約数和(自身を除く): 212245994

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 125, 130, 250, 325, 625, 650, 1250, 1625, 3250, 8125, 12821, 16250, 25642, 64105, 128210, 166673, 320525, 333346, 641050, 833365, 1602625, 1666730, 3205250, 4166825, 8013125, 8333650, 16026250, 20834125, 41668250, 104170625, 208341250]

約数ペア:

[(1, 208341250), (2, 104170625), (5, 41668250), (10, 20834125), (13, 16026250), (25, 8333650), (26, 8013125), (50, 4166825), (65, 3205250), (125, 1666730), (130, 1602625), (250, 833365), (325, 641050), (625, 333346), (650, 320525), (1250, 166673), (1625, 128210), (3250, 64105), (8125, 25642), (12821, 16250)]