20255840

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{677}}^1$

素因数の和:720

約数の個数: 96

約数和(自身を含む): 55357344

約数和(自身を除く): 35101504

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 17, 20, 22, 32, 34, 40, 44, 55, 68, 80, 85, 88, 110, 136, 160, 170, 176, 187, 220, 272, 340, 352, 374, 440, 544, 677, 680, 748, 880, 935, 1354, 1360, 1496, 1760, 1870, 2708, 2720, 2992, 3385, 3740, 5416, 5984, 6770, 7447, 7480, 10832, 11509, 13540, 14894, 14960, 21664, 23018, 27080, 29788, 29920, 37235, 46036, 54160, 57545, 59576, 74470, 92072, 108320, 115090, 119152, 126599, 148940, 184144, 230180, 238304, 253198, 297880, 368288, 460360, 506396, 595760, 632995, 920720, 1012792, 1191520, 1265990, 1841440, 2025584, 2531980, 4051168, 5063960, 10127920, 20255840]

約数ペア:

[(1, 20255840), (2, 10127920), (4, 5063960), (5, 4051168), (8, 2531980), (10, 2025584), (11, 1841440), (16, 1265990), (17, 1191520), (20, 1012792), (22, 920720), (32, 632995), (34, 595760), (40, 506396), (44, 460360), (55, 368288), (68, 297880), (80, 253198), (85, 238304), (88, 230180), (110, 184144), (136, 148940), (160, 126599), (170, 119152), (176, 115090), (187, 108320), (220, 92072), (272, 74470), (340, 59576), (352, 57545), (374, 54160), (440, 46036), (544, 37235), (677, 29920), (680, 29788), (748, 27080), (880, 23018), (935, 21664), (1354, 14960), (1360, 14894), (1496, 13540), (1760, 11509), (1870, 10832), (2708, 7480), (2720, 7447), (2992, 6770), (3385, 5984), (3740, 5416)]