19811428

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{1471}}^1$

素因数の和:1532

約数の個数: 48

約数和(自身を含む): 43853824

約数和(自身を除く): 24042396

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 37, 52, 74, 91, 148, 182, 259, 364, 481, 518, 962, 1036, 1471, 1924, 2942, 3367, 5884, 6734, 10297, 13468, 19123, 20594, 38246, 41188, 54427, 76492, 108854, 133861, 217708, 267722, 380989, 535444, 707551, 761978, 1415102, 1523956, 2830204, 4952857, 9905714, 19811428]

約数ペア:

[(1, 19811428), (2, 9905714), (4, 4952857), (7, 2830204), (13, 1523956), (14, 1415102), (26, 761978), (28, 707551), (37, 535444), (52, 380989), (74, 267722), (91, 217708), (148, 133861), (182, 108854), (259, 76492), (364, 54427), (481, 41188), (518, 38246), (962, 20594), (1036, 19123), (1471, 13468), (1924, 10297), (2942, 6734), (3367, 5884)]