81084020

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{79}}^1$

素因数の和:217

約数の個数: 96

約数和(自身を含む): 188966400

約数和(自身を除く): 107882380

約数列:

[1, 2, 4, 5, 10, 19, 20, 37, 38, 73, 74, 76, 79, 95, 146, 148, 158, 185, 190, 292, 316, 365, 370, 380, 395, 703, 730, 740, 790, 1387, 1406, 1460, 1501, 1580, 2701, 2774, 2812, 2923, 3002, 3515, 5402, 5548, 5767, 5846, 6004, 6935, 7030, 7505, 10804, 11534, 11692, 13505, 13870, 14060, 14615, 15010, 23068, 27010, 27740, 28835, 29230, 30020, 51319, 54020, 55537, 57670, 58460, 102638, 109573, 111074, 115340, 205276, 213379, 219146, 222148, 256595, 277685, 426758, 438292, 513190, 547865, 555370, 853516, 1026380, 1066895, 1095730, 1110740, 2133790, 2191460, 4054201, 4267580, 8108402, 16216804, 20271005, 40542010, 81084020]

約数ペア:

[(1, 81084020), (2, 40542010), (4, 20271005), (5, 16216804), (10, 8108402), (19, 4267580), (20, 4054201), (37, 2191460), (38, 2133790), (73, 1110740), (74, 1095730), (76, 1066895), (79, 1026380), (95, 853516), (146, 555370), (148, 547865), (158, 513190), (185, 438292), (190, 426758), (292, 277685), (316, 256595), (365, 222148), (370, 219146), (380, 213379), (395, 205276), (703, 115340), (730, 111074), (740, 109573), (790, 102638), (1387, 58460), (1406, 57670), (1460, 55537), (1501, 54020), (1580, 51319), (2701, 30020), (2774, 29230), (2812, 28835), (2923, 27740), (3002, 27010), (3515, 23068), (5402, 15010), (5548, 14615), (5767, 14060), (5846, 13870), (6004, 13505), (6935, 11692), (7030, 11534), (7505, 10804)]