200920820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{7243}}^1$

素因数の和:7344

約数の個数: 48

約数和(自身を含む): 450287040

約数和(自身を除く): 249366220

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 73, 76, 95, 146, 190, 292, 365, 380, 730, 1387, 1460, 2774, 5548, 6935, 7243, 13870, 14486, 27740, 28972, 36215, 72430, 137617, 144860, 275234, 528739, 550468, 688085, 1057478, 1376170, 2114956, 2643695, 2752340, 5287390, 10046041, 10574780, 20092082, 40184164, 50230205, 100460410, 200920820]

約数ペア:

[(1, 200920820), (2, 100460410), (4, 50230205), (5, 40184164), (10, 20092082), (19, 10574780), (20, 10046041), (38, 5287390), (73, 2752340), (76, 2643695), (95, 2114956), (146, 1376170), (190, 1057478), (292, 688085), (365, 550468), (380, 528739), (730, 275234), (1387, 144860), (1460, 137617), (2774, 72430), (5548, 36215), (6935, 28972), (7243, 27740), (13870, 14486)]