21378708

素因数分解:

$2^2\times 3^3\times {\mathrm{13}}^1\times {\mathrm{15227}}^1$

素因数の和:15253

約数の個数: 48

約数和(自身を含む): 59693760

約数和(自身を除く): 38315052

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 27, 36, 39, 52, 54, 78, 108, 117, 156, 234, 351, 468, 702, 1404, 15227, 30454, 45681, 60908, 91362, 137043, 182724, 197951, 274086, 395902, 411129, 548172, 593853, 791804, 822258, 1187706, 1644516, 1781559, 2375412, 3563118, 5344677, 7126236, 10689354, 21378708]

約数ペア:

[(1, 21378708), (2, 10689354), (3, 7126236), (4, 5344677), (6, 3563118), (9, 2375412), (12, 1781559), (13, 1644516), (18, 1187706), (26, 822258), (27, 791804), (36, 593853), (39, 548172), (52, 411129), (54, 395902), (78, 274086), (108, 197951), (117, 182724), (156, 137043), (234, 91362), (351, 60908), (468, 45681), (702, 30454), (1404, 15227)]