19809440

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{769}}^1$

素因数の和:814

約数の個数: 96

約数和(自身を含む): 55883520

約数和(自身を除く): 36074080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 32, 35, 40, 46, 56, 70, 80, 92, 112, 115, 140, 160, 161, 184, 224, 230, 280, 322, 368, 460, 560, 644, 736, 769, 805, 920, 1120, 1288, 1538, 1610, 1840, 2576, 3076, 3220, 3680, 3845, 5152, 5383, 6152, 6440, 7690, 10766, 12304, 12880, 15380, 17687, 21532, 24608, 25760, 26915, 30760, 35374, 43064, 53830, 61520, 70748, 86128, 88435, 107660, 123040, 123809, 141496, 172256, 176870, 215320, 247618, 282992, 353740, 430640, 495236, 565984, 619045, 707480, 861280, 990472, 1238090, 1414960, 1980944, 2476180, 2829920, 3961888, 4952360, 9904720, 19809440]

約数ペア:

[(1, 19809440), (2, 9904720), (4, 4952360), (5, 3961888), (7, 2829920), (8, 2476180), (10, 1980944), (14, 1414960), (16, 1238090), (20, 990472), (23, 861280), (28, 707480), (32, 619045), (35, 565984), (40, 495236), (46, 430640), (56, 353740), (70, 282992), (80, 247618), (92, 215320), (112, 176870), (115, 172256), (140, 141496), (160, 123809), (161, 123040), (184, 107660), (224, 88435), (230, 86128), (280, 70748), (322, 61520), (368, 53830), (460, 43064), (560, 35374), (644, 30760), (736, 26915), (769, 25760), (805, 24608), (920, 21532), (1120, 17687), (1288, 15380), (1538, 12880), (1610, 12304), (1840, 10766), (2576, 7690), (3076, 6440), (3220, 6152), (3680, 5383), (3845, 5152)]