21970460

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^2\times {\mathrm{179}}^1$

素因数の和:243

約数の個数: 72

約数和(自身を含む): 51846480

約数和(自身を除く): 29876020

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 34, 38, 68, 76, 85, 95, 170, 179, 190, 323, 340, 358, 361, 380, 646, 716, 722, 895, 1292, 1444, 1615, 1790, 1805, 3043, 3230, 3401, 3580, 3610, 6086, 6137, 6460, 6802, 7220, 12172, 12274, 13604, 15215, 17005, 24548, 30430, 30685, 34010, 57817, 60860, 61370, 64619, 68020, 115634, 122740, 129238, 231268, 258476, 289085, 323095, 578170, 646190, 1098523, 1156340, 1292380, 2197046, 4394092, 5492615, 10985230, 21970460]

約数ペア:

[(1, 21970460), (2, 10985230), (4, 5492615), (5, 4394092), (10, 2197046), (17, 1292380), (19, 1156340), (20, 1098523), (34, 646190), (38, 578170), (68, 323095), (76, 289085), (85, 258476), (95, 231268), (170, 129238), (179, 122740), (190, 115634), (323, 68020), (340, 64619), (358, 61370), (361, 60860), (380, 57817), (646, 34010), (716, 30685), (722, 30430), (895, 24548), (1292, 17005), (1444, 15215), (1615, 13604), (1790, 12274), (1805, 12172), (3043, 7220), (3230, 6802), (3401, 6460), (3580, 6137), (3610, 6086)]