1989898245

素因数分解:

$3^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{213623}}^1$

素因数の和:213663

約数の個数: 40

約数和(自身を含む): 3722184576

約数和(自身を除く): 1732286331

約数列:

[1, 3, 5, 9, 15, 23, 27, 45, 69, 81, 115, 135, 207, 345, 405, 621, 1035, 1863, 3105, 9315, 213623, 640869, 1068115, 1922607, 3204345, 4913329, 5767821, 9613035, 14739987, 17303463, 24566645, 28839105, 44219961, 73699935, 86517315, 132659883, 221099805, 397979649, 663299415, 1989898245]

約数ペア:

[(1, 1989898245), (3, 663299415), (5, 397979649), (9, 221099805), (15, 132659883), (23, 86517315), (27, 73699935), (45, 44219961), (69, 28839105), (81, 24566645), (115, 17303463), (135, 14739987), (207, 9613035), (345, 5767821), (405, 4913329), (621, 3204345), (1035, 1922607), (1863, 1068115), (3105, 640869), (9315, 213623)]