1999461560

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{20411}}^1$

素因数の和:20532

約数の個数: 64

約数和(自身を含む): 4702924800

約数和(自身を除く): 2703463240

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 79, 124, 155, 158, 248, 310, 316, 395, 620, 632, 790, 1240, 1580, 2449, 3160, 4898, 9796, 12245, 19592, 20411, 24490, 40822, 48980, 81644, 97960, 102055, 163288, 204110, 408220, 632741, 816440, 1265482, 1612469, 2530964, 3163705, 3224938, 5061928, 6327410, 6449876, 8062345, 12654820, 12899752, 16124690, 25309640, 32249380, 49986539, 64498760, 99973078, 199946156, 249932695, 399892312, 499865390, 999730780, 1999461560]

約数ペア:

[(1, 1999461560), (2, 999730780), (4, 499865390), (5, 399892312), (8, 249932695), (10, 199946156), (20, 99973078), (31, 64498760), (40, 49986539), (62, 32249380), (79, 25309640), (124, 16124690), (155, 12899752), (158, 12654820), (248, 8062345), (310, 6449876), (316, 6327410), (395, 5061928), (620, 3224938), (632, 3163705), (790, 2530964), (1240, 1612469), (1580, 1265482), (2449, 816440), (3160, 632741), (4898, 408220), (9796, 204110), (12245, 163288), (19592, 102055), (20411, 97960), (24490, 81644), (40822, 48980)]