640722240

素因数分解:

$2^6\times 3^2\times 5^1\times {\mathrm{379}}^1\times {\mathrm{587}}^1$

素因数の和:989

約数の個数: 168

約数和(自身を含む): 2213396640

約数和(自身を除く): 1572674400

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 64, 72, 80, 90, 96, 120, 144, 160, 180, 192, 240, 288, 320, 360, 379, 480, 576, 587, 720, 758, 960, 1137, 1174, 1440, 1516, 1761, 1895, 2274, 2348, 2880, 2935, 3032, 3411, 3522, 3790, 4548, 4696, 5283, 5685, 5870, 6064, 6822, 7044, 7580, 8805, 9096, 9392, 10566, 11370, 11740, 12128, 13644, 14088, 15160, 17055, 17610, 18192, 18784, 21132, 22740, 23480, 24256, 26415, 27288, 28176, 30320, 34110, 35220, 36384, 37568, 42264, 45480, 46960, 52830, 54576, 56352, 60640, 68220, 70440, 72768, 84528, 90960, 93920, 105660, 109152, 112704, 121280, 136440, 140880, 169056, 181920, 187840, 211320, 218304, 222473, 272880, 281760, 338112, 363840, 422640, 444946, 545760, 563520, 667419, 845280, 889892, 1091520, 1112365, 1334838, 1690560, 1779784, 2002257, 2224730, 2669676, 3337095, 3559568, 4004514, 4449460, 5339352, 6674190, 7119136, 8009028, 8898920, 10011285, 10678704, 13348380, 14238272, 16018056, 17797840, 20022570, 21357408, 26696760, 32036112, 35595680, 40045140, 42714816, 53393520, 64072224, 71191360, 80090280, 106787040, 128144448, 160180560, 213574080, 320361120, 640722240]

約数ペア:

[(1, 640722240), (2, 320361120), (3, 213574080), (4, 160180560), (5, 128144448), (6, 106787040), (8, 80090280), (9, 71191360), (10, 64072224), (12, 53393520), (15, 42714816), (16, 40045140), (18, 35595680), (20, 32036112), (24, 26696760), (30, 21357408), (32, 20022570), (36, 17797840), (40, 16018056), (45, 14238272), (48, 13348380), (60, 10678704), (64, 10011285), (72, 8898920), (80, 8009028), (90, 7119136), (96, 6674190), (120, 5339352), (144, 4449460), (160, 4004514), (180, 3559568), (192, 3337095), (240, 2669676), (288, 2224730), (320, 2002257), (360, 1779784), (379, 1690560), (480, 1334838), (576, 1112365), (587, 1091520), (720, 889892), (758, 845280), (960, 667419), (1137, 563520), (1174, 545760), (1440, 444946), (1516, 422640), (1761, 363840), (1895, 338112), (2274, 281760), (2348, 272880), (2880, 222473), (2935, 218304), (3032, 211320), (3411, 187840), (3522, 181920), (3790, 169056), (4548, 140880), (4696, 136440), (5283, 121280), (5685, 112704), (5870, 109152), (6064, 105660), (6822, 93920), (7044, 90960), (7580, 84528), (8805, 72768), (9096, 70440), (9392, 68220), (10566, 60640), (11370, 56352), (11740, 54576), (12128, 52830), (13644, 46960), (14088, 45480), (15160, 42264), (17055, 37568), (17610, 36384), (18192, 35220), (18784, 34110), (21132, 30320), (22740, 28176), (23480, 27288), (24256, 26415)]