2812940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{349}}^1$

素因数の和:402

約数の個数: 48

約数和(自身を含む): 6585600

約数和(自身を除く): 3772660

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 260, 310, 349, 403, 620, 698, 806, 1396, 1612, 1745, 2015, 3490, 4030, 4537, 6980, 8060, 9074, 10819, 18148, 21638, 22685, 43276, 45370, 54095, 90740, 108190, 140647, 216380, 281294, 562588, 703235, 1406470, 2812940]

約数ペア:

[(1, 2812940), (2, 1406470), (4, 703235), (5, 562588), (10, 281294), (13, 216380), (20, 140647), (26, 108190), (31, 90740), (52, 54095), (62, 45370), (65, 43276), (124, 22685), (130, 21638), (155, 18148), (260, 10819), (310, 9074), (349, 8060), (403, 6980), (620, 4537), (698, 4030), (806, 3490), (1396, 2015), (1612, 1745)]