21325600

素因数分解:

$2^5\times 5^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1$

素因数の和:123

約数の個数: 144

約数和(自身を含む): 58121280

約数和(自身を除く): 36795680

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 23, 25, 32, 38, 40, 46, 50, 61, 76, 80, 92, 95, 100, 115, 122, 152, 160, 184, 190, 200, 230, 244, 304, 305, 368, 380, 400, 437, 460, 475, 488, 575, 608, 610, 736, 760, 800, 874, 920, 950, 976, 1150, 1159, 1220, 1403, 1520, 1525, 1748, 1840, 1900, 1952, 2185, 2300, 2318, 2440, 2806, 3040, 3050, 3496, 3680, 3800, 4370, 4600, 4636, 4880, 5612, 5795, 6100, 6992, 7015, 7600, 8740, 9200, 9272, 9760, 10925, 11224, 11590, 12200, 13984, 14030, 15200, 17480, 18400, 18544, 21850, 22448, 23180, 24400, 26657, 28060, 28975, 34960, 35075, 37088, 43700, 44896, 46360, 48800, 53314, 56120, 57950, 69920, 70150, 87400, 92720, 106628, 112240, 115900, 133285, 140300, 174800, 185440, 213256, 224480, 231800, 266570, 280600, 349600, 426512, 463600, 533140, 561200, 666425, 853024, 927200, 1066280, 1122400, 1332850, 2132560, 2665700, 4265120, 5331400, 10662800, 21325600]

約数ペア:

[(1, 21325600), (2, 10662800), (4, 5331400), (5, 4265120), (8, 2665700), (10, 2132560), (16, 1332850), (19, 1122400), (20, 1066280), (23, 927200), (25, 853024), (32, 666425), (38, 561200), (40, 533140), (46, 463600), (50, 426512), (61, 349600), (76, 280600), (80, 266570), (92, 231800), (95, 224480), (100, 213256), (115, 185440), (122, 174800), (152, 140300), (160, 133285), (184, 115900), (190, 112240), (200, 106628), (230, 92720), (244, 87400), (304, 70150), (305, 69920), (368, 57950), (380, 56120), (400, 53314), (437, 48800), (460, 46360), (475, 44896), (488, 43700), (575, 37088), (608, 35075), (610, 34960), (736, 28975), (760, 28060), (800, 26657), (874, 24400), (920, 23180), (950, 22448), (976, 21850), (1150, 18544), (1159, 18400), (1220, 17480), (1403, 15200), (1520, 14030), (1525, 13984), (1748, 12200), (1840, 11590), (1900, 11224), (1952, 10925), (2185, 9760), (2300, 9272), (2318, 9200), (2440, 8740), (2806, 7600), (3040, 7015), (3050, 6992), (3496, 6100), (3680, 5795), (3800, 5612), (4370, 4880), (4600, 4636)]