639844557

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{10601}}^1$

素因数の和:10705

約数の個数: 32

約数和(自身を含む): 977080320

約数和(自身を除く): 337235763

約数列:

[1, 3, 11, 31, 33, 59, 93, 177, 341, 649, 1023, 1829, 1947, 5487, 10601, 20119, 31803, 60357, 116611, 328631, 349833, 625459, 985893, 1876377, 3614941, 6880049, 10844823, 19389229, 20640147, 58167687, 213281519, 639844557]

約数ペア:

[(1, 639844557), (3, 213281519), (11, 58167687), (31, 20640147), (33, 19389229), (59, 10844823), (93, 6880049), (177, 3614941), (341, 1876377), (649, 985893), (1023, 625459), (1829, 349833), (1947, 328631), (5487, 116611), (10601, 60357), (20119, 31803)]