215761240

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{191}}^1\times {\mathrm{911}}^1$

素因数の和:1144

約数の個数: 64

約数和(自身を含む): 504299520

約数和(自身を除く): 288538280

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 191, 248, 310, 382, 620, 764, 911, 955, 1240, 1528, 1822, 1910, 3644, 3820, 4555, 5921, 7288, 7640, 9110, 11842, 18220, 23684, 28241, 29605, 36440, 47368, 56482, 59210, 112964, 118420, 141205, 174001, 225928, 236840, 282410, 348002, 564820, 696004, 870005, 1129640, 1392008, 1740010, 3480020, 5394031, 6960040, 10788062, 21576124, 26970155, 43152248, 53940310, 107880620, 215761240]

約数ペア:

[(1, 215761240), (2, 107880620), (4, 53940310), (5, 43152248), (8, 26970155), (10, 21576124), (20, 10788062), (31, 6960040), (40, 5394031), (62, 3480020), (124, 1740010), (155, 1392008), (191, 1129640), (248, 870005), (310, 696004), (382, 564820), (620, 348002), (764, 282410), (911, 236840), (955, 225928), (1240, 174001), (1528, 141205), (1822, 118420), (1910, 112964), (3644, 59210), (3820, 56482), (4555, 47368), (5921, 36440), (7288, 29605), (7640, 28241), (9110, 23684), (11842, 18220)]