21850850

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{149}}^1\times {\mathrm{419}}^1$

素因数の和:587

約数の個数: 48

約数和(自身を含む): 46872000

約数和(自身を除く): 25021150

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 50, 70, 149, 175, 298, 350, 419, 745, 838, 1043, 1490, 2086, 2095, 2933, 3725, 4190, 5215, 5866, 7450, 10430, 10475, 14665, 20950, 26075, 29330, 52150, 62431, 73325, 124862, 146650, 312155, 437017, 624310, 874034, 1560775, 2185085, 3121550, 4370170, 10925425, 21850850]

約数ペア:

[(1, 21850850), (2, 10925425), (5, 4370170), (7, 3121550), (10, 2185085), (14, 1560775), (25, 874034), (35, 624310), (50, 437017), (70, 312155), (149, 146650), (175, 124862), (298, 73325), (350, 62431), (419, 52150), (745, 29330), (838, 26075), (1043, 20950), (1490, 14665), (2086, 10475), (2095, 10430), (2933, 7450), (3725, 5866), (4190, 5215)]