21988960

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{677}}^1$

素因数の和:728

約数の個数: 96

約数和(自身を含む): 61508160

約数和(自身を除く): 39519200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 29, 32, 35, 40, 56, 58, 70, 80, 112, 116, 140, 145, 160, 203, 224, 232, 280, 290, 406, 464, 560, 580, 677, 812, 928, 1015, 1120, 1160, 1354, 1624, 2030, 2320, 2708, 3248, 3385, 4060, 4640, 4739, 5416, 6496, 6770, 8120, 9478, 10832, 13540, 16240, 18956, 19633, 21664, 23695, 27080, 32480, 37912, 39266, 47390, 54160, 75824, 78532, 94780, 98165, 108320, 137431, 151648, 157064, 189560, 196330, 274862, 314128, 379120, 392660, 549724, 628256, 687155, 758240, 785320, 1099448, 1374310, 1570640, 2198896, 2748620, 3141280, 4397792, 5497240, 10994480, 21988960]

約数ペア:

[(1, 21988960), (2, 10994480), (4, 5497240), (5, 4397792), (7, 3141280), (8, 2748620), (10, 2198896), (14, 1570640), (16, 1374310), (20, 1099448), (28, 785320), (29, 758240), (32, 687155), (35, 628256), (40, 549724), (56, 392660), (58, 379120), (70, 314128), (80, 274862), (112, 196330), (116, 189560), (140, 157064), (145, 151648), (160, 137431), (203, 108320), (224, 98165), (232, 94780), (280, 78532), (290, 75824), (406, 54160), (464, 47390), (560, 39266), (580, 37912), (677, 32480), (812, 27080), (928, 23695), (1015, 21664), (1120, 19633), (1160, 18956), (1354, 16240), (1624, 13540), (2030, 10832), (2320, 9478), (2708, 8120), (3248, 6770), (3385, 6496), (4060, 5416), (4640, 4739)]