20957600

素因数分解:

$2^5\times 5^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1$

素因数の和:127

約数の個数: 144

約数和(自身を含む): 57371328

約数和(自身を除く): 36413728

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 23, 25, 32, 34, 40, 46, 50, 67, 68, 80, 85, 92, 100, 115, 134, 136, 160, 170, 184, 200, 230, 268, 272, 335, 340, 368, 391, 400, 425, 460, 536, 544, 575, 670, 680, 736, 782, 800, 850, 920, 1072, 1139, 1150, 1340, 1360, 1541, 1564, 1675, 1700, 1840, 1955, 2144, 2278, 2300, 2680, 2720, 3082, 3128, 3350, 3400, 3680, 3910, 4556, 4600, 5360, 5695, 6164, 6256, 6700, 6800, 7705, 7820, 9112, 9200, 9775, 10720, 11390, 12328, 12512, 13400, 13600, 15410, 15640, 18224, 18400, 19550, 22780, 24656, 26197, 26800, 28475, 30820, 31280, 36448, 38525, 39100, 45560, 49312, 52394, 53600, 56950, 61640, 62560, 77050, 78200, 91120, 104788, 113900, 123280, 130985, 154100, 156400, 182240, 209576, 227800, 246560, 261970, 308200, 312800, 419152, 455600, 523940, 616400, 654925, 838304, 911200, 1047880, 1232800, 1309850, 2095760, 2619700, 4191520, 5239400, 10478800, 20957600]

約数ペア:

[(1, 20957600), (2, 10478800), (4, 5239400), (5, 4191520), (8, 2619700), (10, 2095760), (16, 1309850), (17, 1232800), (20, 1047880), (23, 911200), (25, 838304), (32, 654925), (34, 616400), (40, 523940), (46, 455600), (50, 419152), (67, 312800), (68, 308200), (80, 261970), (85, 246560), (92, 227800), (100, 209576), (115, 182240), (134, 156400), (136, 154100), (160, 130985), (170, 123280), (184, 113900), (200, 104788), (230, 91120), (268, 78200), (272, 77050), (335, 62560), (340, 61640), (368, 56950), (391, 53600), (400, 52394), (425, 49312), (460, 45560), (536, 39100), (544, 38525), (575, 36448), (670, 31280), (680, 30820), (736, 28475), (782, 26800), (800, 26197), (850, 24656), (920, 22780), (1072, 19550), (1139, 18400), (1150, 18224), (1340, 15640), (1360, 15410), (1541, 13600), (1564, 13400), (1675, 12512), (1700, 12328), (1840, 11390), (1955, 10720), (2144, 9775), (2278, 9200), (2300, 9112), (2680, 7820), (2720, 7705), (3082, 6800), (3128, 6700), (3350, 6256), (3400, 6164), (3680, 5695), (3910, 5360), (4556, 4600)]