40397780

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{907}}^1$

素因数の和:1064

約数の個数: 48

約数和(自身を含む): 90611136

約数和(自身を除く): 50213356

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 131, 170, 262, 340, 524, 655, 907, 1310, 1814, 2227, 2620, 3628, 4454, 4535, 8908, 9070, 11135, 15419, 18140, 22270, 30838, 44540, 61676, 77095, 118817, 154190, 237634, 308380, 475268, 594085, 1188170, 2019889, 2376340, 4039778, 8079556, 10099445, 20198890, 40397780]

約数ペア:

[(1, 40397780), (2, 20198890), (4, 10099445), (5, 8079556), (10, 4039778), (17, 2376340), (20, 2019889), (34, 1188170), (68, 594085), (85, 475268), (131, 308380), (170, 237634), (262, 154190), (340, 118817), (524, 77095), (655, 61676), (907, 44540), (1310, 30838), (1814, 22270), (2227, 18140), (2620, 15419), (3628, 11135), (4454, 9070), (4535, 8908)]