199998400

素因数分解:

$2^6\times 5^2\times 7^2\times {\mathrm{2551}}^1$

素因数の和:2587

約数の個数: 126

約数和(自身を含む): 572691768

約数和(自身を除く): 372693368

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 32, 35, 40, 49, 50, 56, 64, 70, 80, 98, 100, 112, 140, 160, 175, 196, 200, 224, 245, 280, 320, 350, 392, 400, 448, 490, 560, 700, 784, 800, 980, 1120, 1225, 1400, 1568, 1600, 1960, 2240, 2450, 2551, 2800, 3136, 3920, 4900, 5102, 5600, 7840, 9800, 10204, 11200, 12755, 15680, 17857, 19600, 20408, 25510, 35714, 39200, 40816, 51020, 63775, 71428, 78400, 81632, 89285, 102040, 124999, 127550, 142856, 163264, 178570, 204080, 249998, 255100, 285712, 357140, 408160, 446425, 499996, 510200, 571424, 624995, 714280, 816320, 892850, 999992, 1020400, 1142848, 1249990, 1428560, 1785700, 1999984, 2040800, 2499980, 2857120, 3124975, 3571400, 3999968, 4081600, 4999960, 5714240, 6249950, 7142800, 7999936, 9999920, 12499900, 14285600, 19999840, 24999800, 28571200, 39999680, 49999600, 99999200, 199998400]

約数ペア:

[(1, 199998400), (2, 99999200), (4, 49999600), (5, 39999680), (7, 28571200), (8, 24999800), (10, 19999840), (14, 14285600), (16, 12499900), (20, 9999920), (25, 7999936), (28, 7142800), (32, 6249950), (35, 5714240), (40, 4999960), (49, 4081600), (50, 3999968), (56, 3571400), (64, 3124975), (70, 2857120), (80, 2499980), (98, 2040800), (100, 1999984), (112, 1785700), (140, 1428560), (160, 1249990), (175, 1142848), (196, 1020400), (200, 999992), (224, 892850), (245, 816320), (280, 714280), (320, 624995), (350, 571424), (392, 510200), (400, 499996), (448, 446425), (490, 408160), (560, 357140), (700, 285712), (784, 255100), (800, 249998), (980, 204080), (1120, 178570), (1225, 163264), (1400, 142856), (1568, 127550), (1600, 124999), (1960, 102040), (2240, 89285), (2450, 81632), (2551, 78400), (2800, 71428), (3136, 63775), (3920, 51020), (4900, 40816), (5102, 39200), (5600, 35714), (7840, 25510), (9800, 20408), (10204, 19600), (11200, 17857), (12755, 15680)]