15990520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{191}}^1$

素因数の和:245

約数の個数: 128

約数和(自身を含む): 46448640

約数和(自身を除く): 30458120

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 23, 26, 28, 35, 40, 46, 52, 56, 65, 70, 91, 92, 104, 115, 130, 140, 161, 182, 184, 191, 230, 260, 280, 299, 322, 364, 382, 455, 460, 520, 598, 644, 728, 764, 805, 910, 920, 955, 1196, 1288, 1337, 1495, 1528, 1610, 1820, 1910, 2093, 2392, 2483, 2674, 2990, 3220, 3640, 3820, 4186, 4393, 4966, 5348, 5980, 6440, 6685, 7640, 8372, 8786, 9932, 10465, 10696, 11960, 12415, 13370, 16744, 17381, 17572, 19864, 20930, 21965, 24830, 26740, 30751, 34762, 35144, 41860, 43930, 49660, 53480, 57109, 61502, 69524, 83720, 86905, 87860, 99320, 114218, 123004, 139048, 153755, 173810, 175720, 228436, 246008, 285545, 307510, 347620, 399763, 456872, 571090, 615020, 695240, 799526, 1142180, 1230040, 1599052, 1998815, 2284360, 3198104, 3997630, 7995260, 15990520]

約数ペア:

[(1, 15990520), (2, 7995260), (4, 3997630), (5, 3198104), (7, 2284360), (8, 1998815), (10, 1599052), (13, 1230040), (14, 1142180), (20, 799526), (23, 695240), (26, 615020), (28, 571090), (35, 456872), (40, 399763), (46, 347620), (52, 307510), (56, 285545), (65, 246008), (70, 228436), (91, 175720), (92, 173810), (104, 153755), (115, 139048), (130, 123004), (140, 114218), (161, 99320), (182, 87860), (184, 86905), (191, 83720), (230, 69524), (260, 61502), (280, 57109), (299, 53480), (322, 49660), (364, 43930), (382, 41860), (455, 35144), (460, 34762), (520, 30751), (598, 26740), (644, 24830), (728, 21965), (764, 20930), (805, 19864), (910, 17572), (920, 17381), (955, 16744), (1196, 13370), (1288, 12415), (1337, 11960), (1495, 10696), (1528, 10465), (1610, 9932), (1820, 8786), (1910, 8372), (2093, 7640), (2392, 6685), (2483, 6440), (2674, 5980), (2990, 5348), (3220, 4966), (3640, 4393), (3820, 4186)]