65008400

素因数分解:

$2^4\times 5^2\times {\mathrm{331}}^1\times {\mathrm{491}}^1$

素因数の和:840

約数の個数: 60

約数和(自身を含む): 156973584

約数和(自身を除く): 91965184

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 331, 400, 491, 662, 982, 1324, 1655, 1964, 2455, 2648, 3310, 3928, 4910, 5296, 6620, 7856, 8275, 9820, 12275, 13240, 16550, 19640, 24550, 26480, 33100, 39280, 49100, 66200, 98200, 132400, 162521, 196400, 325042, 650084, 812605, 1300168, 1625210, 2600336, 3250420, 4063025, 6500840, 8126050, 13001680, 16252100, 32504200, 65008400]

約数ペア:

[(1, 65008400), (2, 32504200), (4, 16252100), (5, 13001680), (8, 8126050), (10, 6500840), (16, 4063025), (20, 3250420), (25, 2600336), (40, 1625210), (50, 1300168), (80, 812605), (100, 650084), (200, 325042), (331, 196400), (400, 162521), (491, 132400), (662, 98200), (982, 66200), (1324, 49100), (1655, 39280), (1964, 33100), (2455, 26480), (2648, 24550), (3310, 19640), (3928, 16550), (4910, 13240), (5296, 12275), (6620, 9820), (7856, 8275)]