205123750

素因数分解:

$2^1\times 5^4\times {\mathrm{13}}^2\times {\mathrm{971}}^1$

素因数の和:1019

約数の個数: 60

約数和(自身を含む): 416763468

約数和(自身を除く): 211639718

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 125, 130, 169, 250, 325, 338, 625, 650, 845, 971, 1250, 1625, 1690, 1942, 3250, 4225, 4855, 8125, 8450, 9710, 12623, 16250, 21125, 24275, 25246, 42250, 48550, 63115, 105625, 121375, 126230, 164099, 211250, 242750, 315575, 328198, 606875, 631150, 820495, 1213750, 1577875, 1640990, 3155750, 4102475, 7889375, 8204950, 15778750, 20512375, 41024750, 102561875, 205123750]

約数ペア:

[(1, 205123750), (2, 102561875), (5, 41024750), (10, 20512375), (13, 15778750), (25, 8204950), (26, 7889375), (50, 4102475), (65, 3155750), (125, 1640990), (130, 1577875), (169, 1213750), (250, 820495), (325, 631150), (338, 606875), (625, 328198), (650, 315575), (845, 242750), (971, 211250), (1250, 164099), (1625, 126230), (1690, 121375), (1942, 105625), (3250, 63115), (4225, 48550), (4855, 42250), (8125, 25246), (8450, 24275), (9710, 21125), (12623, 16250)]