28121964

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{2539}}^1$

素因数の和:2630

約数の個数: 48

約数和(自身を含む): 71688960

約数和(自身を除く): 43566996

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 71, 78, 142, 156, 213, 284, 426, 852, 923, 1846, 2539, 2769, 3692, 5078, 5538, 7617, 10156, 11076, 15234, 30468, 33007, 66014, 99021, 132028, 180269, 198042, 360538, 396084, 540807, 721076, 1081614, 2163228, 2343497, 4686994, 7030491, 9373988, 14060982, 28121964]

約数ペア:

[(1, 28121964), (2, 14060982), (3, 9373988), (4, 7030491), (6, 4686994), (12, 2343497), (13, 2163228), (26, 1081614), (39, 721076), (52, 540807), (71, 396084), (78, 360538), (142, 198042), (156, 180269), (213, 132028), (284, 99021), (426, 66014), (852, 33007), (923, 30468), (1846, 15234), (2539, 11076), (2769, 10156), (3692, 7617), (5078, 5538)]