21066350

素因数分解:

$2^1\times 5^2\times {\mathrm{61}}^1\times {\mathrm{6907}}^1$

素因数の和:6980

約数の個数: 24

約数和(自身を含む): 39831528

約数和(自身を除く): 18765178

約数列:

[1, 2, 5, 10, 25, 50, 61, 122, 305, 610, 1525, 3050, 6907, 13814, 34535, 69070, 172675, 345350, 421327, 842654, 2106635, 4213270, 10533175, 21066350]

約数ペア:

[(1, 21066350), (2, 10533175), (5, 4213270), (10, 2106635), (25, 842654), (50, 421327), (61, 345350), (122, 172675), (305, 69070), (610, 34535), (1525, 13814), (3050, 6907)]