78263840

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^2\times {\mathrm{509}}^1$

素因数の和:586

約数の個数: 72

約数和(自身を含む): 191430540

約数和(自身を除く): 113166700

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 80, 124, 155, 160, 248, 310, 496, 509, 620, 961, 992, 1018, 1240, 1922, 2036, 2480, 2545, 3844, 4072, 4805, 4960, 5090, 7688, 8144, 9610, 10180, 15376, 15779, 16288, 19220, 20360, 30752, 31558, 38440, 40720, 63116, 76880, 78895, 81440, 126232, 153760, 157790, 252464, 315580, 489149, 504928, 631160, 978298, 1262320, 1956596, 2445745, 2524640, 3913192, 4891490, 7826384, 9782980, 15652768, 19565960, 39131920, 78263840]

約数ペア:

[(1, 78263840), (2, 39131920), (4, 19565960), (5, 15652768), (8, 9782980), (10, 7826384), (16, 4891490), (20, 3913192), (31, 2524640), (32, 2445745), (40, 1956596), (62, 1262320), (80, 978298), (124, 631160), (155, 504928), (160, 489149), (248, 315580), (310, 252464), (496, 157790), (509, 153760), (620, 126232), (961, 81440), (992, 78895), (1018, 76880), (1240, 63116), (1922, 40720), (2036, 38440), (2480, 31558), (2545, 30752), (3844, 20360), (4072, 19220), (4805, 16288), (4960, 15779), (5090, 15376), (7688, 10180), (8144, 9610)]