128649380

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{163}}^1$

素因数の和:289

約数の個数: 96

約数和(自身を含む): 299765760

約数和(自身を除く): 171116380

約数列:

[1, 2, 4, 5, 10, 19, 20, 31, 38, 62, 67, 76, 95, 124, 134, 155, 163, 190, 268, 310, 326, 335, 380, 589, 620, 652, 670, 815, 1178, 1273, 1340, 1630, 2077, 2356, 2546, 2945, 3097, 3260, 4154, 5053, 5092, 5890, 6194, 6365, 8308, 10106, 10385, 10921, 11780, 12388, 12730, 15485, 20212, 20770, 21842, 25265, 25460, 30970, 39463, 41540, 43684, 50530, 54605, 61940, 78926, 96007, 101060, 109210, 157852, 192014, 197315, 207499, 218420, 338551, 384028, 394630, 414998, 480035, 677102, 789260, 829996, 960070, 1037495, 1354204, 1692755, 1920140, 2074990, 3385510, 4149980, 6432469, 6771020, 12864938, 25729876, 32162345, 64324690, 128649380]

約数ペア:

[(1, 128649380), (2, 64324690), (4, 32162345), (5, 25729876), (10, 12864938), (19, 6771020), (20, 6432469), (31, 4149980), (38, 3385510), (62, 2074990), (67, 1920140), (76, 1692755), (95, 1354204), (124, 1037495), (134, 960070), (155, 829996), (163, 789260), (190, 677102), (268, 480035), (310, 414998), (326, 394630), (335, 384028), (380, 338551), (589, 218420), (620, 207499), (652, 197315), (670, 192014), (815, 157852), (1178, 109210), (1273, 101060), (1340, 96007), (1630, 78926), (2077, 61940), (2356, 54605), (2546, 50530), (2945, 43684), (3097, 41540), (3260, 39463), (4154, 30970), (5053, 25460), (5092, 25265), (5890, 21842), (6194, 20770), (6365, 20212), (8308, 15485), (10106, 12730), (10385, 12388), (10921, 11780)]