21376990

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{3067}}^1$

素因数の和:3132

約数の個数: 32

約数和(自身を含む): 41749344

約数和(自身を除く): 20372354

約数列:

[1, 2, 5, 10, 17, 34, 41, 82, 85, 170, 205, 410, 697, 1394, 3067, 3485, 6134, 6970, 15335, 30670, 52139, 104278, 125747, 251494, 260695, 521390, 628735, 1257470, 2137699, 4275398, 10688495, 21376990]

約数ペア:

[(1, 21376990), (2, 10688495), (5, 4275398), (10, 2137699), (17, 1257470), (34, 628735), (41, 521390), (82, 260695), (85, 251494), (170, 125747), (205, 104278), (410, 52139), (697, 30670), (1394, 15335), (3067, 6970), (3485, 6134)]