1889918720

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{47629}}^1$

素因数の和:47681

約数の個数: 72

約数和(自身を含む): 4673074560

約数和(自身を除く): 2783155840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 620, 640, 992, 1240, 1280, 1984, 2480, 3968, 4960, 7936, 9920, 19840, 39680, 47629, 95258, 190516, 238145, 381032, 476290, 762064, 952580, 1476499, 1524128, 1905160, 2952998, 3048256, 3810320, 5905996, 6096512, 7382495, 7620640, 11811992, 12193024, 14764990, 15241280, 23623984, 29529980, 30482560, 47247968, 59059960, 60965120, 94495936, 118119920, 188991872, 236239840, 377983744, 472479680, 944959360, 1889918720]

約数ペア:

[(1, 1889918720), (2, 944959360), (4, 472479680), (5, 377983744), (8, 236239840), (10, 188991872), (16, 118119920), (20, 94495936), (31, 60965120), (32, 59059960), (40, 47247968), (62, 30482560), (64, 29529980), (80, 23623984), (124, 15241280), (128, 14764990), (155, 12193024), (160, 11811992), (248, 7620640), (256, 7382495), (310, 6096512), (320, 5905996), (496, 3810320), (620, 3048256), (640, 2952998), (992, 1905160), (1240, 1524128), (1280, 1476499), (1984, 952580), (2480, 762064), (3968, 476290), (4960, 381032), (7936, 238145), (9920, 190516), (19840, 95258), (39680, 47629)]