66855020

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^2\times {\mathrm{71}}^1\times {\mathrm{89}}^1$

素因数の和:215

約数の個数: 72

約数和(自身を含む): 150504480

約数和(自身を除く): 83649460

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 71, 89, 92, 115, 142, 178, 230, 284, 355, 356, 445, 460, 529, 710, 890, 1058, 1420, 1633, 1780, 2047, 2116, 2645, 3266, 4094, 5290, 6319, 6532, 8165, 8188, 10235, 10580, 12638, 16330, 20470, 25276, 31595, 32660, 37559, 40940, 47081, 63190, 75118, 94162, 126380, 145337, 150236, 187795, 188324, 235405, 290674, 375590, 470810, 581348, 726685, 751180, 941620, 1453370, 2906740, 3342751, 6685502, 13371004, 16713755, 33427510, 66855020]

約数ペア:

[(1, 66855020), (2, 33427510), (4, 16713755), (5, 13371004), (10, 6685502), (20, 3342751), (23, 2906740), (46, 1453370), (71, 941620), (89, 751180), (92, 726685), (115, 581348), (142, 470810), (178, 375590), (230, 290674), (284, 235405), (355, 188324), (356, 187795), (445, 150236), (460, 145337), (529, 126380), (710, 94162), (890, 75118), (1058, 63190), (1420, 47081), (1633, 40940), (1780, 37559), (2047, 32660), (2116, 31595), (2645, 25276), (3266, 20470), (4094, 16330), (5290, 12638), (6319, 10580), (6532, 10235), (8165, 8188)]