51815540

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{1429}}^1$

素因数の和:1489

約数の個数: 72

約数和(自身を含む): 130089960

約数和(自身を除く): 78274420

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 37, 49, 70, 74, 98, 140, 148, 185, 196, 245, 259, 370, 490, 518, 740, 980, 1036, 1295, 1429, 1813, 2590, 2858, 3626, 5180, 5716, 7145, 7252, 9065, 10003, 14290, 18130, 20006, 28580, 36260, 40012, 50015, 52873, 70021, 100030, 105746, 140042, 200060, 211492, 264365, 280084, 350105, 370111, 528730, 700210, 740222, 1057460, 1400420, 1480444, 1850555, 2590777, 3701110, 5181554, 7402220, 10363108, 12953885, 25907770, 51815540]

約数ペア:

[(1, 51815540), (2, 25907770), (4, 12953885), (5, 10363108), (7, 7402220), (10, 5181554), (14, 3701110), (20, 2590777), (28, 1850555), (35, 1480444), (37, 1400420), (49, 1057460), (70, 740222), (74, 700210), (98, 528730), (140, 370111), (148, 350105), (185, 280084), (196, 264365), (245, 211492), (259, 200060), (370, 140042), (490, 105746), (518, 100030), (740, 70021), (980, 52873), (1036, 50015), (1295, 40012), (1429, 36260), (1813, 28580), (2590, 20006), (2858, 18130), (3626, 14290), (5180, 10003), (5716, 9065), (7145, 7252)]