1991485360

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{12161}}^1$

素因数の和:12286

約数の個数: 80

約数和(自身を含む): 4886205120

約数和(自身を除く): 2894719760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 89, 92, 115, 178, 184, 230, 356, 368, 445, 460, 712, 890, 920, 1424, 1780, 1840, 2047, 3560, 4094, 7120, 8188, 10235, 12161, 16376, 20470, 24322, 32752, 40940, 48644, 60805, 81880, 97288, 121610, 163760, 194576, 243220, 279703, 486440, 559406, 972880, 1082329, 1118812, 1398515, 2164658, 2237624, 2797030, 4329316, 4475248, 5411645, 5594060, 8658632, 10823290, 11188120, 17317264, 21646580, 22376240, 24893567, 43293160, 49787134, 86586320, 99574268, 124467835, 199148536, 248935670, 398297072, 497871340, 995742680, 1991485360]

約数ペア:

[(1, 1991485360), (2, 995742680), (4, 497871340), (5, 398297072), (8, 248935670), (10, 199148536), (16, 124467835), (20, 99574268), (23, 86586320), (40, 49787134), (46, 43293160), (80, 24893567), (89, 22376240), (92, 21646580), (115, 17317264), (178, 11188120), (184, 10823290), (230, 8658632), (356, 5594060), (368, 5411645), (445, 4475248), (460, 4329316), (712, 2797030), (890, 2237624), (920, 2164658), (1424, 1398515), (1780, 1118812), (1840, 1082329), (2047, 972880), (3560, 559406), (4094, 486440), (7120, 279703), (8188, 243220), (10235, 194576), (12161, 163760), (16376, 121610), (20470, 97288), (24322, 81880), (32752, 60805), (40940, 48644)]