257549240

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{1229}}^1$

素因数の和:1297

約数の個数: 96

約数和(自身を含む): 648259200

約数和(自身を除く): 390709960

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 40, 52, 62, 65, 104, 124, 130, 155, 169, 248, 260, 310, 338, 403, 520, 620, 676, 806, 845, 1229, 1240, 1352, 1612, 1690, 2015, 2458, 3224, 3380, 4030, 4916, 5239, 6145, 6760, 8060, 9832, 10478, 12290, 15977, 16120, 20956, 24580, 26195, 31954, 38099, 41912, 49160, 52390, 63908, 76198, 79885, 104780, 127816, 152396, 159770, 190495, 207701, 209560, 304792, 319540, 380990, 415402, 495287, 639080, 761980, 830804, 990574, 1038505, 1523960, 1661608, 1981148, 2077010, 2476435, 3962296, 4154020, 4952870, 6438731, 8308040, 9905740, 12877462, 19811480, 25754924, 32193655, 51509848, 64387310, 128774620, 257549240]

約数ペア:

[(1, 257549240), (2, 128774620), (4, 64387310), (5, 51509848), (8, 32193655), (10, 25754924), (13, 19811480), (20, 12877462), (26, 9905740), (31, 8308040), (40, 6438731), (52, 4952870), (62, 4154020), (65, 3962296), (104, 2476435), (124, 2077010), (130, 1981148), (155, 1661608), (169, 1523960), (248, 1038505), (260, 990574), (310, 830804), (338, 761980), (403, 639080), (520, 495287), (620, 415402), (676, 380990), (806, 319540), (845, 304792), (1229, 209560), (1240, 207701), (1352, 190495), (1612, 159770), (1690, 152396), (2015, 127816), (2458, 104780), (3224, 79885), (3380, 76198), (4030, 63908), (4916, 52390), (5239, 49160), (6145, 41912), (6760, 38099), (8060, 31954), (9832, 26195), (10478, 24580), (12290, 20956), (15977, 16120)]