1388800

素因数分解:

$2^8\times 5^2\times 7^1\times {\mathrm{31}}^1$

素因数の和:64

約数の個数: 108

約数和(自身を含む): 4055296

約数和(自身を除く): 2666496

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 31, 32, 35, 40, 50, 56, 62, 64, 70, 80, 100, 112, 124, 128, 140, 155, 160, 175, 200, 217, 224, 248, 256, 280, 310, 320, 350, 400, 434, 448, 496, 560, 620, 640, 700, 775, 800, 868, 896, 992, 1085, 1120, 1240, 1280, 1400, 1550, 1600, 1736, 1792, 1984, 2170, 2240, 2480, 2800, 3100, 3200, 3472, 3968, 4340, 4480, 4960, 5425, 5600, 6200, 6400, 6944, 7936, 8680, 8960, 9920, 10850, 11200, 12400, 13888, 17360, 19840, 21700, 22400, 24800, 27776, 34720, 39680, 43400, 44800, 49600, 55552, 69440, 86800, 99200, 138880, 173600, 198400, 277760, 347200, 694400, 1388800]

約数ペア:

[(1, 1388800), (2, 694400), (4, 347200), (5, 277760), (7, 198400), (8, 173600), (10, 138880), (14, 99200), (16, 86800), (20, 69440), (25, 55552), (28, 49600), (31, 44800), (32, 43400), (35, 39680), (40, 34720), (50, 27776), (56, 24800), (62, 22400), (64, 21700), (70, 19840), (80, 17360), (100, 13888), (112, 12400), (124, 11200), (128, 10850), (140, 9920), (155, 8960), (160, 8680), (175, 7936), (200, 6944), (217, 6400), (224, 6200), (248, 5600), (256, 5425), (280, 4960), (310, 4480), (320, 4340), (350, 3968), (400, 3472), (434, 3200), (448, 3100), (496, 2800), (560, 2480), (620, 2240), (640, 2170), (700, 1984), (775, 1792), (800, 1736), (868, 1600), (896, 1550), (992, 1400), (1085, 1280), (1120, 1240)]