642968985

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{163}}^1\times {\mathrm{499}}^1$

素因数の和:718

約数の個数: 64

約数和(自身を含む): 1133568000

約数和(自身を除く): 490599015

約数列:

[1, 3, 5, 15, 17, 31, 51, 85, 93, 155, 163, 255, 465, 489, 499, 527, 815, 1497, 1581, 2445, 2495, 2635, 2771, 5053, 7485, 7905, 8313, 8483, 13855, 15159, 15469, 25265, 25449, 41565, 42415, 46407, 75795, 77345, 81337, 85901, 127245, 232035, 244011, 257703, 262973, 406685, 429505, 788919, 1220055, 1288515, 1314865, 1382729, 2521447, 3944595, 4148187, 6913645, 7564341, 12607235, 20740935, 37821705, 42864599, 128593797, 214322995, 642968985]

約数ペア:

[(1, 642968985), (3, 214322995), (5, 128593797), (15, 42864599), (17, 37821705), (31, 20740935), (51, 12607235), (85, 7564341), (93, 6913645), (155, 4148187), (163, 3944595), (255, 2521447), (465, 1382729), (489, 1314865), (499, 1288515), (527, 1220055), (815, 788919), (1497, 429505), (1581, 406685), (2445, 262973), (2495, 257703), (2635, 244011), (2771, 232035), (5053, 127245), (7485, 85901), (7905, 81337), (8313, 77345), (8483, 75795), (13855, 46407), (15159, 42415), (15469, 41565), (25265, 25449)]