19915696780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^2\times {\mathrm{268913}}^1$

素因数の和:268975

約数の個数: 72

約数和(自身を含む): 49966372512

約数和(自身を除く): 30050675732

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 70, 92, 115, 140, 161, 230, 322, 460, 529, 644, 805, 1058, 1610, 2116, 2645, 3220, 3703, 5290, 7406, 10580, 14812, 18515, 37030, 74060, 268913, 537826, 1075652, 1344565, 1882391, 2689130, 3764782, 5378260, 6184999, 7529564, 9411955, 12369998, 18823910, 24739996, 30924995, 37647820, 43294993, 61849990, 86589986, 123699980, 142254977, 173179972, 216474965, 284509954, 432949930, 569019908, 711274885, 865899860, 995784839, 1422549770, 1991569678, 2845099540, 3983139356, 4978924195, 9957848390, 19915696780]

約数ペア:

[(1, 19915696780), (2, 9957848390), (4, 4978924195), (5, 3983139356), (7, 2845099540), (10, 1991569678), (14, 1422549770), (20, 995784839), (23, 865899860), (28, 711274885), (35, 569019908), (46, 432949930), (70, 284509954), (92, 216474965), (115, 173179972), (140, 142254977), (161, 123699980), (230, 86589986), (322, 61849990), (460, 43294993), (529, 37647820), (644, 30924995), (805, 24739996), (1058, 18823910), (1610, 12369998), (2116, 9411955), (2645, 7529564), (3220, 6184999), (3703, 5378260), (5290, 3764782), (7406, 2689130), (10580, 1882391), (14812, 1344565), (18515, 1075652), (37030, 537826), (74060, 268913)]