138561680

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{91159}}^1$

素因数の和:91191

約数の個数: 40

約数和(自身を含む): 339115200

約数和(自身を除く): 200553520

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 91159, 182318, 364636, 455795, 729272, 911590, 1458544, 1732021, 1823180, 3464042, 3646360, 6928084, 7292720, 8660105, 13856168, 17320210, 27712336, 34640420, 69280840, 138561680]

約数ペア:

[(1, 138561680), (2, 69280840), (4, 34640420), (5, 27712336), (8, 17320210), (10, 13856168), (16, 8660105), (19, 7292720), (20, 6928084), (38, 3646360), (40, 3464042), (76, 1823180), (80, 1732021), (95, 1458544), (152, 911590), (190, 729272), (304, 455795), (380, 364636), (760, 182318), (1520, 91159)]