71970340

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{107}}^1\times {\mathrm{199}}^1$

素因数の和:341

約数の個数: 72

約数和(自身を含む): 166017600

約数和(自身を除く): 94047260

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 107, 130, 169, 199, 214, 260, 338, 398, 428, 535, 676, 796, 845, 995, 1070, 1391, 1690, 1990, 2140, 2587, 2782, 3380, 3980, 5174, 5564, 6955, 10348, 12935, 13910, 18083, 21293, 25870, 27820, 33631, 36166, 42586, 51740, 67262, 72332, 85172, 90415, 106465, 134524, 168155, 180830, 212930, 276809, 336310, 361660, 425860, 553618, 672620, 1107236, 1384045, 2768090, 3598517, 5536180, 7197034, 14394068, 17992585, 35985170, 71970340]

約数ペア:

[(1, 71970340), (2, 35985170), (4, 17992585), (5, 14394068), (10, 7197034), (13, 5536180), (20, 3598517), (26, 2768090), (52, 1384045), (65, 1107236), (107, 672620), (130, 553618), (169, 425860), (199, 361660), (214, 336310), (260, 276809), (338, 212930), (398, 180830), (428, 168155), (535, 134524), (676, 106465), (796, 90415), (845, 85172), (995, 72332), (1070, 67262), (1391, 51740), (1690, 42586), (1990, 36166), (2140, 33631), (2587, 27820), (2782, 25870), (3380, 21293), (3980, 18083), (5174, 13910), (5564, 12935), (6955, 10348)]