21104060

素因数分解:

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

素因数の和:163

約数の個数: 72

約数和(自身を含む): 48646080

約数和(自身を除く): 27542020

約数列:

[1, 2, 4, 5, 10, 19, 20, 37, 38, 74, 76, 79, 95, 148, 158, 185, 190, 316, 361, 370, 380, 395, 703, 722, 740, 790, 1406, 1444, 1501, 1580, 1805, 2812, 2923, 3002, 3515, 3610, 5846, 6004, 7030, 7220, 7505, 11692, 13357, 14060, 14615, 15010, 26714, 28519, 29230, 30020, 53428, 55537, 57038, 58460, 66785, 111074, 114076, 133570, 142595, 222148, 267140, 277685, 285190, 555370, 570380, 1055203, 1110740, 2110406, 4220812, 5276015, 10552030, 21104060]

約数ペア:

[(1, 21104060), (2, 10552030), (4, 5276015), (5, 4220812), (10, 2110406), (19, 1110740), (20, 1055203), (37, 570380), (38, 555370), (74, 285190), (76, 277685), (79, 267140), (95, 222148), (148, 142595), (158, 133570), (185, 114076), (190, 111074), (316, 66785), (361, 58460), (370, 57038), (380, 55537), (395, 53428), (703, 30020), (722, 29230), (740, 28519), (790, 26714), (1406, 15010), (1444, 14615), (1501, 14060), (1580, 13357), (1805, 11692), (2812, 7505), (2923, 7220), (3002, 7030), (3515, 6004), (3610, 5846)]