80118920

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{997}}^1$

素因数の和:1063

約数の個数: 96

約数和(自身を含む): 215029080

約数和(自身を除く): 134910160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 41, 49, 56, 70, 82, 98, 140, 164, 196, 205, 245, 280, 287, 328, 392, 410, 490, 574, 820, 980, 997, 1148, 1435, 1640, 1960, 1994, 2009, 2296, 2870, 3988, 4018, 4985, 5740, 6979, 7976, 8036, 9970, 10045, 11480, 13958, 16072, 19940, 20090, 27916, 34895, 39880, 40180, 40877, 48853, 55832, 69790, 80360, 81754, 97706, 139580, 163508, 195412, 204385, 244265, 279160, 286139, 327016, 390824, 408770, 488530, 572278, 817540, 977060, 1144556, 1430695, 1635080, 1954120, 2002973, 2289112, 2861390, 4005946, 5722780, 8011892, 10014865, 11445560, 16023784, 20029730, 40059460, 80118920]

約数ペア:

[(1, 80118920), (2, 40059460), (4, 20029730), (5, 16023784), (7, 11445560), (8, 10014865), (10, 8011892), (14, 5722780), (20, 4005946), (28, 2861390), (35, 2289112), (40, 2002973), (41, 1954120), (49, 1635080), (56, 1430695), (70, 1144556), (82, 977060), (98, 817540), (140, 572278), (164, 488530), (196, 408770), (205, 390824), (245, 327016), (280, 286139), (287, 279160), (328, 244265), (392, 204385), (410, 195412), (490, 163508), (574, 139580), (820, 97706), (980, 81754), (997, 80360), (1148, 69790), (1435, 55832), (1640, 48853), (1960, 40877), (1994, 40180), (2009, 39880), (2296, 34895), (2870, 27916), (3988, 20090), (4018, 19940), (4985, 16072), (5740, 13958), (6979, 11480), (7976, 10045), (8036, 9970)]