641253890

素因数分解:

$2^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{59}}^1\times {\mathrm{20507}}^1$

素因数の和:20626

約数の個数: 32

約数和(自身を含む): 1196026560

約数和(自身を除く): 554772670

約数列:

[1, 2, 5, 10, 53, 59, 106, 118, 265, 295, 530, 590, 3127, 6254, 15635, 20507, 31270, 41014, 102535, 205070, 1086871, 1209913, 2173742, 2419826, 5434355, 6049565, 10868710, 12099130, 64125389, 128250778, 320626945, 641253890]

約数ペア:

[(1, 641253890), (2, 320626945), (5, 128250778), (10, 64125389), (53, 12099130), (59, 10868710), (106, 6049565), (118, 5434355), (265, 2419826), (295, 2173742), (530, 1209913), (590, 1086871), (3127, 205070), (6254, 102535), (15635, 41014), (20507, 31270)]