19908200

素因数分解:

$2^3\times 5^2\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1$

素因数の和:92

約数の個数: 144

約数和(自身を含む): 54460800

約数和(自身を除く): 34552600

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 25, 26, 31, 38, 40, 50, 52, 62, 65, 76, 95, 100, 104, 124, 130, 152, 155, 169, 190, 200, 247, 248, 260, 310, 325, 338, 380, 403, 475, 494, 520, 589, 620, 650, 676, 760, 775, 806, 845, 950, 988, 1178, 1235, 1240, 1300, 1352, 1550, 1612, 1690, 1900, 1976, 2015, 2356, 2470, 2600, 2945, 3100, 3211, 3224, 3380, 3800, 4030, 4225, 4712, 4940, 5239, 5890, 6175, 6200, 6422, 6760, 7657, 8060, 8450, 9880, 10075, 10478, 11780, 12350, 12844, 14725, 15314, 16055, 16120, 16900, 20150, 20956, 23560, 24700, 25688, 26195, 29450, 30628, 32110, 33800, 38285, 40300, 41912, 49400, 52390, 58900, 61256, 64220, 76570, 80275, 80600, 99541, 104780, 117800, 128440, 130975, 153140, 160550, 191425, 199082, 209560, 261950, 306280, 321100, 382850, 398164, 497705, 523900, 642200, 765700, 796328, 995410, 1047800, 1531400, 1990820, 2488525, 3981640, 4977050, 9954100, 19908200]

約数ペア:

[(1, 19908200), (2, 9954100), (4, 4977050), (5, 3981640), (8, 2488525), (10, 1990820), (13, 1531400), (19, 1047800), (20, 995410), (25, 796328), (26, 765700), (31, 642200), (38, 523900), (40, 497705), (50, 398164), (52, 382850), (62, 321100), (65, 306280), (76, 261950), (95, 209560), (100, 199082), (104, 191425), (124, 160550), (130, 153140), (152, 130975), (155, 128440), (169, 117800), (190, 104780), (200, 99541), (247, 80600), (248, 80275), (260, 76570), (310, 64220), (325, 61256), (338, 58900), (380, 52390), (403, 49400), (475, 41912), (494, 40300), (520, 38285), (589, 33800), (620, 32110), (650, 30628), (676, 29450), (760, 26195), (775, 25688), (806, 24700), (845, 23560), (950, 20956), (988, 20150), (1178, 16900), (1235, 16120), (1240, 16055), (1300, 15314), (1352, 14725), (1550, 12844), (1612, 12350), (1690, 11780), (1900, 10478), (1976, 10075), (2015, 9880), (2356, 8450), (2470, 8060), (2600, 7657), (2945, 6760), (3100, 6422), (3211, 6200), (3224, 6175), (3380, 5890), (3800, 5239), (4030, 4940), (4225, 4712)]