20457120

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1$

素因数の和:167

約数の個数: 192

約数和(自身を含む): 71850240

約数和(自身を除く): 51393120

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 23, 24, 30, 32, 34, 40, 46, 48, 51, 60, 68, 69, 80, 85, 92, 96, 102, 109, 115, 120, 136, 138, 160, 170, 184, 204, 218, 230, 240, 255, 272, 276, 327, 340, 345, 368, 391, 408, 436, 460, 480, 510, 544, 545, 552, 654, 680, 690, 736, 782, 816, 872, 920, 1020, 1090, 1104, 1173, 1308, 1360, 1380, 1564, 1632, 1635, 1744, 1840, 1853, 1955, 2040, 2180, 2208, 2346, 2507, 2616, 2720, 2760, 3128, 3270, 3488, 3680, 3706, 3910, 4080, 4360, 4692, 5014, 5232, 5520, 5559, 5865, 6256, 6540, 7412, 7521, 7820, 8160, 8720, 9265, 9384, 10028, 10464, 11040, 11118, 11730, 12512, 12535, 13080, 14824, 15042, 15640, 17440, 18530, 18768, 20056, 22236, 23460, 25070, 26160, 27795, 29648, 30084, 31280, 37060, 37536, 37605, 40112, 42619, 44472, 46920, 50140, 52320, 55590, 59296, 60168, 62560, 74120, 75210, 80224, 85238, 88944, 93840, 100280, 111180, 120336, 127857, 148240, 150420, 170476, 177888, 187680, 200560, 213095, 222360, 240672, 255714, 296480, 300840, 340952, 401120, 426190, 444720, 511428, 601680, 639285, 681904, 852380, 889440, 1022856, 1203360, 1278570, 1363808, 1704760, 2045712, 2557140, 3409520, 4091424, 5114280, 6819040, 10228560, 20457120]

約数ペア:

[(1, 20457120), (2, 10228560), (3, 6819040), (4, 5114280), (5, 4091424), (6, 3409520), (8, 2557140), (10, 2045712), (12, 1704760), (15, 1363808), (16, 1278570), (17, 1203360), (20, 1022856), (23, 889440), (24, 852380), (30, 681904), (32, 639285), (34, 601680), (40, 511428), (46, 444720), (48, 426190), (51, 401120), (60, 340952), (68, 300840), (69, 296480), (80, 255714), (85, 240672), (92, 222360), (96, 213095), (102, 200560), (109, 187680), (115, 177888), (120, 170476), (136, 150420), (138, 148240), (160, 127857), (170, 120336), (184, 111180), (204, 100280), (218, 93840), (230, 88944), (240, 85238), (255, 80224), (272, 75210), (276, 74120), (327, 62560), (340, 60168), (345, 59296), (368, 55590), (391, 52320), (408, 50140), (436, 46920), (460, 44472), (480, 42619), (510, 40112), (544, 37605), (545, 37536), (552, 37060), (654, 31280), (680, 30084), (690, 29648), (736, 27795), (782, 26160), (816, 25070), (872, 23460), (920, 22236), (1020, 20056), (1090, 18768), (1104, 18530), (1173, 17440), (1308, 15640), (1360, 15042), (1380, 14824), (1564, 13080), (1632, 12535), (1635, 12512), (1744, 11730), (1840, 11118), (1853, 11040), (1955, 10464), (2040, 10028), (2180, 9384), (2208, 9265), (2346, 8720), (2507, 8160), (2616, 7820), (2720, 7521), (2760, 7412), (3128, 6540), (3270, 6256), (3488, 5865), (3680, 5559), (3706, 5520), (3910, 5232), (4080, 5014), (4360, 4692)]