100017920

素因数分解:

$2^8\times 5^1\times {\mathrm{78139}}^1$

素因数の和:78160

約数の個数: 36

約数和(自身を含む): 239577240

約数和(自身を除く): 139559320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 78139, 156278, 312556, 390695, 625112, 781390, 1250224, 1562780, 2500448, 3125560, 5000896, 6251120, 10001792, 12502240, 20003584, 25004480, 50008960, 100017920]

約数ペア:

[(1, 100017920), (2, 50008960), (4, 25004480), (5, 20003584), (8, 12502240), (10, 10001792), (16, 6251120), (20, 5000896), (32, 3125560), (40, 2500448), (64, 1562780), (80, 1250224), (128, 781390), (160, 625112), (256, 390695), (320, 312556), (640, 156278), (1280, 78139)]