81579780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{9643}}^1$

素因数の和:9705

約数の個数: 72

約数和(自身を含む): 252749952

約数和(自身を除く): 171170172

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 47, 60, 90, 94, 141, 180, 188, 235, 282, 423, 470, 564, 705, 846, 940, 1410, 1692, 2115, 2820, 4230, 8460, 9643, 19286, 28929, 38572, 48215, 57858, 86787, 96430, 115716, 144645, 173574, 192860, 289290, 347148, 433935, 453221, 578580, 867870, 906442, 1359663, 1735740, 1812884, 2266105, 2719326, 4078989, 4532210, 5438652, 6798315, 8157978, 9064420, 13596630, 16315956, 20394945, 27193260, 40789890, 81579780]

約数ペア:

[(1, 81579780), (2, 40789890), (3, 27193260), (4, 20394945), (5, 16315956), (6, 13596630), (9, 9064420), (10, 8157978), (12, 6798315), (15, 5438652), (18, 4532210), (20, 4078989), (30, 2719326), (36, 2266105), (45, 1812884), (47, 1735740), (60, 1359663), (90, 906442), (94, 867870), (141, 578580), (180, 453221), (188, 433935), (235, 347148), (282, 289290), (423, 192860), (470, 173574), (564, 144645), (705, 115716), (846, 96430), (940, 86787), (1410, 57858), (1692, 48215), (2115, 38572), (2820, 28929), (4230, 19286), (8460, 9643)]