21458820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{139}}^1$

素因数の和:265

約数の個数: 96

約数和(自身を含む): 63221760

約数和(自身を除く): 41762940

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 31, 60, 62, 83, 93, 124, 139, 155, 166, 186, 249, 278, 310, 332, 372, 415, 417, 465, 498, 556, 620, 695, 830, 834, 930, 996, 1245, 1390, 1660, 1668, 1860, 2085, 2490, 2573, 2780, 4170, 4309, 4980, 5146, 7719, 8340, 8618, 10292, 11537, 12865, 12927, 15438, 17236, 21545, 23074, 25730, 25854, 30876, 34611, 38595, 43090, 46148, 51460, 51708, 57685, 64635, 69222, 77190, 86180, 115370, 129270, 138444, 154380, 173055, 230740, 258540, 346110, 357647, 692220, 715294, 1072941, 1430588, 1788235, 2145882, 3576470, 4291764, 5364705, 7152940, 10729410, 21458820]

約数ペア:

[(1, 21458820), (2, 10729410), (3, 7152940), (4, 5364705), (5, 4291764), (6, 3576470), (10, 2145882), (12, 1788235), (15, 1430588), (20, 1072941), (30, 715294), (31, 692220), (60, 357647), (62, 346110), (83, 258540), (93, 230740), (124, 173055), (139, 154380), (155, 138444), (166, 129270), (186, 115370), (249, 86180), (278, 77190), (310, 69222), (332, 64635), (372, 57685), (415, 51708), (417, 51460), (465, 46148), (498, 43090), (556, 38595), (620, 34611), (695, 30876), (830, 25854), (834, 25730), (930, 23074), (996, 21545), (1245, 17236), (1390, 15438), (1660, 12927), (1668, 12865), (1860, 11537), (2085, 10292), (2490, 8618), (2573, 8340), (2780, 7719), (4170, 5146), (4309, 4980)]