128609860

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{47}}^1\times {\mathrm{379}}^1$

素因数の和:473

約数の個数: 72

約数和(自身を含む): 291876480

約数和(自身を除く): 163266620

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 47, 76, 94, 95, 188, 190, 235, 361, 379, 380, 470, 722, 758, 893, 940, 1444, 1516, 1786, 1805, 1895, 3572, 3610, 3790, 4465, 7201, 7220, 7580, 8930, 14402, 16967, 17813, 17860, 28804, 33934, 35626, 36005, 67868, 71252, 72010, 84835, 89065, 136819, 144020, 169670, 178130, 273638, 338447, 339340, 356260, 547276, 676894, 684095, 1353788, 1368190, 1692235, 2736380, 3384470, 6430493, 6768940, 12860986, 25721972, 32152465, 64304930, 128609860]

約数ペア:

[(1, 128609860), (2, 64304930), (4, 32152465), (5, 25721972), (10, 12860986), (19, 6768940), (20, 6430493), (38, 3384470), (47, 2736380), (76, 1692235), (94, 1368190), (95, 1353788), (188, 684095), (190, 676894), (235, 547276), (361, 356260), (379, 339340), (380, 338447), (470, 273638), (722, 178130), (758, 169670), (893, 144020), (940, 136819), (1444, 89065), (1516, 84835), (1786, 72010), (1805, 71252), (1895, 67868), (3572, 36005), (3610, 35626), (3790, 33934), (4465, 28804), (7201, 17860), (7220, 17813), (7580, 16967), (8930, 14402)]