89996800

素因数分解:

$2^9\times 5^2\times {\mathrm{79}}^1\times {\mathrm{89}}^1$

素因数の和:196

約数の個数: 120

約数和(自身を含む): 228333600

約数和(自身を除く): 138336800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 79, 80, 89, 100, 128, 158, 160, 178, 200, 256, 316, 320, 356, 395, 400, 445, 512, 632, 640, 712, 790, 800, 890, 1264, 1280, 1424, 1580, 1600, 1780, 1975, 2225, 2528, 2560, 2848, 3160, 3200, 3560, 3950, 4450, 5056, 5696, 6320, 6400, 7031, 7120, 7900, 8900, 10112, 11392, 12640, 12800, 14062, 14240, 15800, 17800, 20224, 22784, 25280, 28124, 28480, 31600, 35155, 35600, 40448, 45568, 50560, 56248, 56960, 63200, 70310, 71200, 101120, 112496, 113920, 126400, 140620, 142400, 175775, 202240, 224992, 227840, 252800, 281240, 284800, 351550, 449984, 505600, 562480, 569600, 703100, 899968, 1011200, 1124960, 1139200, 1406200, 1799936, 2249920, 2812400, 3599872, 4499840, 5624800, 8999680, 11249600, 17999360, 22499200, 44998400, 89996800]

約数ペア:

[(1, 89996800), (2, 44998400), (4, 22499200), (5, 17999360), (8, 11249600), (10, 8999680), (16, 5624800), (20, 4499840), (25, 3599872), (32, 2812400), (40, 2249920), (50, 1799936), (64, 1406200), (79, 1139200), (80, 1124960), (89, 1011200), (100, 899968), (128, 703100), (158, 569600), (160, 562480), (178, 505600), (200, 449984), (256, 351550), (316, 284800), (320, 281240), (356, 252800), (395, 227840), (400, 224992), (445, 202240), (512, 175775), (632, 142400), (640, 140620), (712, 126400), (790, 113920), (800, 112496), (890, 101120), (1264, 71200), (1280, 70310), (1424, 63200), (1580, 56960), (1600, 56248), (1780, 50560), (1975, 45568), (2225, 40448), (2528, 35600), (2560, 35155), (2848, 31600), (3160, 28480), (3200, 28124), (3560, 25280), (3950, 22784), (4450, 20224), (5056, 17800), (5696, 15800), (6320, 14240), (6400, 14062), (7031, 12800), (7120, 12640), (7900, 11392), (8900, 10112)]