19983912

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^3\times {\mathrm{379}}^1$

素因数の和:427

約数の個数: 64

約数和(自身を含む): 54264000

約数和(自身を除く): 34280088

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 156, 169, 312, 338, 379, 507, 676, 758, 1014, 1137, 1352, 1516, 2028, 2197, 2274, 3032, 4056, 4394, 4548, 4927, 6591, 8788, 9096, 9854, 13182, 14781, 17576, 19708, 26364, 29562, 39416, 52728, 59124, 64051, 118248, 128102, 192153, 256204, 384306, 512408, 768612, 832663, 1537224, 1665326, 2497989, 3330652, 4995978, 6661304, 9991956, 19983912]

約数ペア:

[(1, 19983912), (2, 9991956), (3, 6661304), (4, 4995978), (6, 3330652), (8, 2497989), (12, 1665326), (13, 1537224), (24, 832663), (26, 768612), (39, 512408), (52, 384306), (78, 256204), (104, 192153), (156, 128102), (169, 118248), (312, 64051), (338, 59124), (379, 52728), (507, 39416), (676, 29562), (758, 26364), (1014, 19708), (1137, 17576), (1352, 14781), (1516, 13182), (2028, 9854), (2197, 9096), (2274, 8788), (3032, 6591), (4056, 4927), (4394, 4548)]