18238780

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{503}}^1$

素因数の和:563

約数の個数: 72

約数和(自身を含む): 45849888

約数和(自身を除く): 27611108

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, 503, 518, 740, 980, 1006, 1036, 1295, 1813, 2012, 2515, 2590, 3521, 3626, 5030, 5180, 7042, 7252, 9065, 10060, 14084, 17605, 18130, 18611, 24647, 35210, 36260, 37222, 49294, 70420, 74444, 93055, 98588, 123235, 130277, 186110, 246470, 260554, 372220, 492940, 521108, 651385, 911939, 1302770, 1823878, 2605540, 3647756, 4559695, 9119390, 18238780]

約数ペア:

[(1, 18238780), (2, 9119390), (4, 4559695), (5, 3647756), (7, 2605540), (10, 1823878), (14, 1302770), (20, 911939), (28, 651385), (35, 521108), (37, 492940), (49, 372220), (70, 260554), (74, 246470), (98, 186110), (140, 130277), (148, 123235), (185, 98588), (196, 93055), (245, 74444), (259, 70420), (370, 49294), (490, 37222), (503, 36260), (518, 35210), (740, 24647), (980, 18611), (1006, 18130), (1036, 17605), (1295, 14084), (1813, 10060), (2012, 9065), (2515, 7252), (2590, 7042), (3521, 5180), (3626, 5030)]