21387091180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{59051}}^1$

素因数の和:59279

約数の個数: 96

約数和(自身を含む): 55556121600

約数和(自身を除く): 34169030420

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 199, 260, 364, 398, 455, 796, 910, 995, 1393, 1820, 1990, 2587, 2786, 3980, 5174, 5572, 6965, 10348, 12935, 13930, 18109, 25870, 27860, 36218, 51740, 59051, 72436, 90545, 118102, 181090, 236204, 295255, 362180, 413357, 590510, 767663, 826714, 1181020, 1535326, 1653428, 2066785, 3070652, 3838315, 4133570, 5373641, 7676630, 8267140, 10747282, 11751149, 15353260, 21494564, 23502298, 26868205, 47004596, 53736410, 58755745, 82258043, 107472820, 117511490, 152764937, 164516086, 235022980, 305529874, 329032172, 411290215, 611059748, 763824685, 822580430, 1069354559, 1527649370, 1645160860, 2138709118, 3055298740, 4277418236, 5346772795, 10693545590, 21387091180]

約数ペア:

[(1, 21387091180), (2, 10693545590), (4, 5346772795), (5, 4277418236), (7, 3055298740), (10, 2138709118), (13, 1645160860), (14, 1527649370), (20, 1069354559), (26, 822580430), (28, 763824685), (35, 611059748), (52, 411290215), (65, 329032172), (70, 305529874), (91, 235022980), (130, 164516086), (140, 152764937), (182, 117511490), (199, 107472820), (260, 82258043), (364, 58755745), (398, 53736410), (455, 47004596), (796, 26868205), (910, 23502298), (995, 21494564), (1393, 15353260), (1820, 11751149), (1990, 10747282), (2587, 8267140), (2786, 7676630), (3980, 5373641), (5174, 4133570), (5572, 3838315), (6965, 3070652), (10348, 2066785), (12935, 1653428), (13930, 1535326), (18109, 1181020), (25870, 826714), (27860, 767663), (36218, 590510), (51740, 413357), (59051, 362180), (72436, 295255), (90545, 236204), (118102, 181090)]