31012940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{131}}^1$

素因数の和:255

約数の個数: 96

約数和(自身を含む): 79833600

約数和(自身を除く): 48820660

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 76, 89, 95, 131, 133, 140, 178, 190, 262, 266, 356, 380, 445, 524, 532, 623, 655, 665, 890, 917, 1246, 1310, 1330, 1691, 1780, 1834, 2489, 2492, 2620, 2660, 3115, 3382, 3668, 4585, 4978, 6230, 6764, 8455, 9170, 9956, 11659, 11837, 12445, 12460, 16910, 17423, 18340, 23318, 23674, 24890, 33820, 34846, 46636, 47348, 49780, 58295, 59185, 69692, 81613, 87115, 116590, 118370, 163226, 174230, 221521, 233180, 236740, 326452, 348460, 408065, 443042, 816130, 886084, 1107605, 1550647, 1632260, 2215210, 3101294, 4430420, 6202588, 7753235, 15506470, 31012940]

約数ペア:

[(1, 31012940), (2, 15506470), (4, 7753235), (5, 6202588), (7, 4430420), (10, 3101294), (14, 2215210), (19, 1632260), (20, 1550647), (28, 1107605), (35, 886084), (38, 816130), (70, 443042), (76, 408065), (89, 348460), (95, 326452), (131, 236740), (133, 233180), (140, 221521), (178, 174230), (190, 163226), (262, 118370), (266, 116590), (356, 87115), (380, 81613), (445, 69692), (524, 59185), (532, 58295), (623, 49780), (655, 47348), (665, 46636), (890, 34846), (917, 33820), (1246, 24890), (1310, 23674), (1330, 23318), (1691, 18340), (1780, 17423), (1834, 16910), (2489, 12460), (2492, 12445), (2620, 11837), (2660, 11659), (3115, 9956), (3382, 9170), (3668, 8455), (4585, 6764), (4978, 6230)]