81368805

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{41}}^2\times {\mathrm{461}}^1$

素因数の和:558

約数の個数: 48

約数和(自身を含む): 152836992

約数和(自身を除く): 71468187

約数列:

[1, 3, 5, 7, 15, 21, 35, 41, 105, 123, 205, 287, 461, 615, 861, 1383, 1435, 1681, 2305, 3227, 4305, 5043, 6915, 8405, 9681, 11767, 16135, 18901, 25215, 35301, 48405, 56703, 58835, 94505, 132307, 176505, 283515, 396921, 661535, 774941, 1984605, 2324823, 3874705, 5424587, 11624115, 16273761, 27122935, 81368805]

約数ペア:

[(1, 81368805), (3, 27122935), (5, 16273761), (7, 11624115), (15, 5424587), (21, 3874705), (35, 2324823), (41, 1984605), (105, 774941), (123, 661535), (205, 396921), (287, 283515), (461, 176505), (615, 132307), (861, 94505), (1383, 58835), (1435, 56703), (1681, 48405), (2305, 35301), (3227, 25215), (4305, 18901), (5043, 16135), (6915, 11767), (8405, 9681)]