261720135

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{163}}^1\times {\mathrm{1151}}^1$

素因数の和:1356

約数の個数: 48

約数和(自身を含む): 471564288

約数和(自身を除く): 209844153

約数列:

[1, 3, 5, 9, 15, 31, 45, 93, 155, 163, 279, 465, 489, 815, 1151, 1395, 1467, 2445, 3453, 5053, 5755, 7335, 10359, 15159, 17265, 25265, 35681, 45477, 51795, 75795, 107043, 178405, 187613, 227385, 321129, 535215, 562839, 938065, 1605645, 1688517, 2814195, 5816003, 8442585, 17448009, 29080015, 52344027, 87240045, 261720135]

約数ペア:

[(1, 261720135), (3, 87240045), (5, 52344027), (9, 29080015), (15, 17448009), (31, 8442585), (45, 5816003), (93, 2814195), (155, 1688517), (163, 1605645), (279, 938065), (465, 562839), (489, 535215), (815, 321129), (1151, 227385), (1395, 187613), (1467, 178405), (2445, 107043), (3453, 75795), (5053, 51795), (5755, 45477), (7335, 35681), (10359, 25265), (15159, 17265)]