78343960

素因数分解:

$2^3\times 5^1\times {\mathrm{491}}^1\times {\mathrm{3989}}^1$

素因数の和:4491

約数の個数: 32

約数和(自身を含む): 176677200

約数和(自身を除く): 98333240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 491, 982, 1964, 2455, 3928, 3989, 4910, 7978, 9820, 15956, 19640, 19945, 31912, 39890, 79780, 159560, 1958599, 3917198, 7834396, 9792995, 15668792, 19585990, 39171980, 78343960]

約数ペア:

[(1, 78343960), (2, 39171980), (4, 19585990), (5, 15668792), (8, 9792995), (10, 7834396), (20, 3917198), (40, 1958599), (491, 159560), (982, 79780), (1964, 39890), (2455, 31912), (3928, 19945), (3989, 19640), (4910, 15956), (7978, 9820)]