19908700

素因数分解:

$2^2\times 5^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{239}}^1$

素因数の和:284

約数の個数: 108

約数和(自身を含む): 53434080

約数和(自身を除く): 33525380

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 25, 28, 34, 35, 49, 50, 68, 70, 85, 98, 100, 119, 140, 170, 175, 196, 238, 239, 245, 340, 350, 425, 476, 478, 490, 595, 700, 833, 850, 956, 980, 1190, 1195, 1225, 1666, 1673, 1700, 2380, 2390, 2450, 2975, 3332, 3346, 4063, 4165, 4780, 4900, 5950, 5975, 6692, 8126, 8330, 8365, 11711, 11900, 11950, 16252, 16660, 16730, 20315, 20825, 23422, 23900, 28441, 33460, 40630, 41650, 41825, 46844, 56882, 58555, 81260, 83300, 83650, 101575, 113764, 117110, 142205, 167300, 199087, 203150, 234220, 284410, 292775, 398174, 406300, 568820, 585550, 711025, 796348, 995435, 1171100, 1422050, 1990870, 2844100, 3981740, 4977175, 9954350, 19908700]

約数ペア:

[(1, 19908700), (2, 9954350), (4, 4977175), (5, 3981740), (7, 2844100), (10, 1990870), (14, 1422050), (17, 1171100), (20, 995435), (25, 796348), (28, 711025), (34, 585550), (35, 568820), (49, 406300), (50, 398174), (68, 292775), (70, 284410), (85, 234220), (98, 203150), (100, 199087), (119, 167300), (140, 142205), (170, 117110), (175, 113764), (196, 101575), (238, 83650), (239, 83300), (245, 81260), (340, 58555), (350, 56882), (425, 46844), (476, 41825), (478, 41650), (490, 40630), (595, 33460), (700, 28441), (833, 23900), (850, 23422), (956, 20825), (980, 20315), (1190, 16730), (1195, 16660), (1225, 16252), (1666, 11950), (1673, 11900), (1700, 11711), (2380, 8365), (2390, 8330), (2450, 8126), (2975, 6692), (3332, 5975), (3346, 5950), (4063, 4900), (4165, 4780)]