1217217520

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{800801}}^1$

素因数の和:800833

約数の個数: 40

約数和(自身を含む): 2978983440

約数和(自身を除く): 1761765920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 800801, 1601602, 3203204, 4004005, 6406408, 8008010, 12812816, 15215219, 16016020, 30430438, 32032040, 60860876, 64064080, 76076095, 121721752, 152152190, 243443504, 304304380, 608608760, 1217217520]

約数ペア:

[(1, 1217217520), (2, 608608760), (4, 304304380), (5, 243443504), (8, 152152190), (10, 121721752), (16, 76076095), (19, 64064080), (20, 60860876), (38, 32032040), (40, 30430438), (76, 16016020), (80, 15215219), (95, 12812816), (152, 8008010), (190, 6406408), (304, 4004005), (380, 3203204), (760, 1601602), (1520, 800801)]