820839080

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{17891}}^1$

素因数の和:17970

約数の個数: 64

約数和(自身を含む): 1958100480

約数和(自身を除く): 1137261400

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 37, 40, 62, 74, 124, 148, 155, 185, 248, 296, 310, 370, 620, 740, 1147, 1240, 1480, 2294, 4588, 5735, 9176, 11470, 17891, 22940, 35782, 45880, 71564, 89455, 143128, 178910, 357820, 554621, 661967, 715640, 1109242, 1323934, 2218484, 2647868, 2773105, 3309835, 4436968, 5295736, 5546210, 6619670, 11092420, 13239340, 20520977, 22184840, 26478680, 41041954, 82083908, 102604885, 164167816, 205209770, 410419540, 820839080]

約数ペア:

[(1, 820839080), (2, 410419540), (4, 205209770), (5, 164167816), (8, 102604885), (10, 82083908), (20, 41041954), (31, 26478680), (37, 22184840), (40, 20520977), (62, 13239340), (74, 11092420), (124, 6619670), (148, 5546210), (155, 5295736), (185, 4436968), (248, 3309835), (296, 2773105), (310, 2647868), (370, 2218484), (620, 1323934), (740, 1109242), (1147, 715640), (1240, 661967), (1480, 554621), (2294, 357820), (4588, 178910), (5735, 143128), (9176, 89455), (11470, 71564), (17891, 45880), (22940, 35782)]