138699580

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{349}}^1\times {\mathrm{641}}^1$

素因数の和:1030

約数の個数: 48

約数和(自身を含む): 301996800

約数和(自身を除く): 163297220

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 349, 620, 641, 698, 1282, 1396, 1745, 2564, 3205, 3490, 6410, 6980, 10819, 12820, 19871, 21638, 39742, 43276, 54095, 79484, 99355, 108190, 198710, 216380, 223709, 397420, 447418, 894836, 1118545, 2237090, 4474180, 6934979, 13869958, 27739916, 34674895, 69349790, 138699580]

約数ペア:

[(1, 138699580), (2, 69349790), (4, 34674895), (5, 27739916), (10, 13869958), (20, 6934979), (31, 4474180), (62, 2237090), (124, 1118545), (155, 894836), (310, 447418), (349, 397420), (620, 223709), (641, 216380), (698, 198710), (1282, 108190), (1396, 99355), (1745, 79484), (2564, 54095), (3205, 43276), (3490, 39742), (6410, 21638), (6980, 19871), (10819, 12820)]