81708620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{3917}}^1$

素因数の和:4082

約数の個数: 48

約数和(自身を含む): 197467200

約数和(自身を除く): 115758580

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 149, 298, 596, 745, 1043, 1490, 2086, 2980, 3917, 4172, 5215, 7834, 10430, 15668, 19585, 20860, 27419, 39170, 54838, 78340, 109676, 137095, 274190, 548380, 583633, 1167266, 2334532, 2918165, 4085431, 5836330, 8170862, 11672660, 16341724, 20427155, 40854310, 81708620]

約数ペア:

[(1, 81708620), (2, 40854310), (4, 20427155), (5, 16341724), (7, 11672660), (10, 8170862), (14, 5836330), (20, 4085431), (28, 2918165), (35, 2334532), (70, 1167266), (140, 583633), (149, 548380), (298, 274190), (596, 137095), (745, 109676), (1043, 78340), (1490, 54838), (2086, 39170), (2980, 27419), (3917, 20860), (4172, 19585), (5215, 15668), (7834, 10430)]