20901760

素因数分解:

$2^7\times 5^1\times {\mathrm{11}}^1\times {\mathrm{2969}}^1$

素因数の和:2999

約数の個数: 64

約数和(自身を含む): 54529200

約数和(自身を除く): 33627440

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 128, 160, 176, 220, 320, 352, 440, 640, 704, 880, 1408, 1760, 2969, 3520, 5938, 7040, 11876, 14845, 23752, 29690, 32659, 47504, 59380, 65318, 95008, 118760, 130636, 163295, 190016, 237520, 261272, 326590, 380032, 475040, 522544, 653180, 950080, 1045088, 1306360, 1900160, 2090176, 2612720, 4180352, 5225440, 10450880, 20901760]

約数ペア:

[(1, 20901760), (2, 10450880), (4, 5225440), (5, 4180352), (8, 2612720), (10, 2090176), (11, 1900160), (16, 1306360), (20, 1045088), (22, 950080), (32, 653180), (40, 522544), (44, 475040), (55, 380032), (64, 326590), (80, 261272), (88, 237520), (110, 190016), (128, 163295), (160, 130636), (176, 118760), (220, 95008), (320, 65318), (352, 59380), (440, 47504), (640, 32659), (704, 29690), (880, 23752), (1408, 14845), (1760, 11876), (2969, 7040), (3520, 5938)]