260965900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{1019}}^1$

素因数の和:1243

約数の個数: 72

約数和(自身を含む): 613554480

約数和(自身を除く): 352588580

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 197, 260, 325, 394, 650, 788, 985, 1019, 1300, 1970, 2038, 2561, 3940, 4076, 4925, 5095, 5122, 9850, 10190, 10244, 12805, 13247, 19700, 20380, 25475, 25610, 26494, 50950, 51220, 52988, 64025, 66235, 101900, 128050, 132470, 200743, 256100, 264940, 331175, 401486, 662350, 802972, 1003715, 1324700, 2007430, 2609659, 4014860, 5018575, 5219318, 10037150, 10438636, 13048295, 20074300, 26096590, 52193180, 65241475, 130482950, 260965900]

約数ペア:

[(1, 260965900), (2, 130482950), (4, 65241475), (5, 52193180), (10, 26096590), (13, 20074300), (20, 13048295), (25, 10438636), (26, 10037150), (50, 5219318), (52, 5018575), (65, 4014860), (100, 2609659), (130, 2007430), (197, 1324700), (260, 1003715), (325, 802972), (394, 662350), (650, 401486), (788, 331175), (985, 264940), (1019, 256100), (1300, 200743), (1970, 132470), (2038, 128050), (2561, 101900), (3940, 66235), (4076, 64025), (4925, 52988), (5095, 51220), (5122, 50950), (9850, 26494), (10190, 25610), (10244, 25475), (12805, 20380), (13247, 19700)]