28695160

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{397}}^1$

素因数の和:560

約数の個数: 64

約数和(自身を含む): 70207200

約数和(自身を除く): 41512040

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 139, 260, 278, 397, 520, 556, 695, 794, 1112, 1390, 1588, 1807, 1985, 2780, 3176, 3614, 3970, 5161, 5560, 7228, 7940, 9035, 10322, 14456, 15880, 18070, 20644, 25805, 36140, 41288, 51610, 55183, 72280, 103220, 110366, 206440, 220732, 275915, 441464, 551830, 717379, 1103660, 1434758, 2207320, 2869516, 3586895, 5739032, 7173790, 14347580, 28695160]

約数ペア:

[(1, 28695160), (2, 14347580), (4, 7173790), (5, 5739032), (8, 3586895), (10, 2869516), (13, 2207320), (20, 1434758), (26, 1103660), (40, 717379), (52, 551830), (65, 441464), (104, 275915), (130, 220732), (139, 206440), (260, 110366), (278, 103220), (397, 72280), (520, 55183), (556, 51610), (695, 41288), (794, 36140), (1112, 25805), (1390, 20644), (1588, 18070), (1807, 15880), (1985, 14456), (2780, 10322), (3176, 9035), (3614, 7940), (3970, 7228), (5161, 5560)]