81541900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{293}}^1$

素因数の和:352

約数の個数: 108

約数和(自身を含む): 203643216

約数和(自身を除く): 122101316

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 23, 25, 44, 46, 50, 55, 92, 100, 110, 115, 121, 220, 230, 242, 253, 275, 293, 460, 484, 506, 550, 575, 586, 605, 1012, 1100, 1150, 1172, 1210, 1265, 1465, 2300, 2420, 2530, 2783, 2930, 3025, 3223, 5060, 5566, 5860, 6050, 6325, 6446, 6739, 7325, 11132, 12100, 12650, 12892, 13478, 13915, 14650, 16115, 25300, 26956, 27830, 29300, 32230, 33695, 35453, 55660, 64460, 67390, 69575, 70906, 74129, 80575, 134780, 139150, 141812, 148258, 161150, 168475, 177265, 278300, 296516, 322300, 336950, 354530, 370645, 673900, 709060, 741290, 815419, 886325, 1482580, 1630838, 1772650, 1853225, 3261676, 3545300, 3706450, 4077095, 7412900, 8154190, 16308380, 20385475, 40770950, 81541900]

約数ペア:

[(1, 81541900), (2, 40770950), (4, 20385475), (5, 16308380), (10, 8154190), (11, 7412900), (20, 4077095), (22, 3706450), (23, 3545300), (25, 3261676), (44, 1853225), (46, 1772650), (50, 1630838), (55, 1482580), (92, 886325), (100, 815419), (110, 741290), (115, 709060), (121, 673900), (220, 370645), (230, 354530), (242, 336950), (253, 322300), (275, 296516), (293, 278300), (460, 177265), (484, 168475), (506, 161150), (550, 148258), (575, 141812), (586, 139150), (605, 134780), (1012, 80575), (1100, 74129), (1150, 70906), (1172, 69575), (1210, 67390), (1265, 64460), (1465, 55660), (2300, 35453), (2420, 33695), (2530, 32230), (2783, 29300), (2930, 27830), (3025, 26956), (3223, 25300), (5060, 16115), (5566, 14650), (5860, 13915), (6050, 13478), (6325, 12892), (6446, 12650), (6739, 12100), (7325, 11132)]