20056790

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1$

素因数の和:185

約数の個数: 64

約数和(自身を含む): 41150592

約数和(自身を除く): 21093802

約数列:

[1, 2, 5, 10, 13, 26, 41, 53, 65, 71, 82, 106, 130, 142, 205, 265, 355, 410, 530, 533, 689, 710, 923, 1066, 1378, 1846, 2173, 2665, 2911, 3445, 3763, 4346, 4615, 5330, 5822, 6890, 7526, 9230, 10865, 14555, 18815, 21730, 28249, 29110, 37630, 37843, 48919, 56498, 75686, 97838, 141245, 154283, 189215, 244595, 282490, 308566, 378430, 489190, 771415, 1542830, 2005679, 4011358, 10028395, 20056790]

約数ペア:

[(1, 20056790), (2, 10028395), (5, 4011358), (10, 2005679), (13, 1542830), (26, 771415), (41, 489190), (53, 378430), (65, 308566), (71, 282490), (82, 244595), (106, 189215), (130, 154283), (142, 141245), (205, 97838), (265, 75686), (355, 56498), (410, 48919), (530, 37843), (533, 37630), (689, 29110), (710, 28249), (923, 21730), (1066, 18815), (1378, 14555), (1846, 10865), (2173, 9230), (2665, 7526), (2911, 6890), (3445, 5822), (3763, 5330), (4346, 4615)]