21209916

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19423}}^1$

素因数の和:19450

約数の個数: 48

約数和(自身を含む): 60913664

約数和(自身を除く): 39703748

約数列:

[1, 2, 3, 4, 6, 7, 12, 13, 14, 21, 26, 28, 39, 42, 52, 78, 84, 91, 156, 182, 273, 364, 546, 1092, 19423, 38846, 58269, 77692, 116538, 135961, 233076, 252499, 271922, 407883, 504998, 543844, 757497, 815766, 1009996, 1514994, 1631532, 1767493, 3029988, 3534986, 5302479, 7069972, 10604958, 21209916]

約数ペア:

[(1, 21209916), (2, 10604958), (3, 7069972), (4, 5302479), (6, 3534986), (7, 3029988), (12, 1767493), (13, 1631532), (14, 1514994), (21, 1009996), (26, 815766), (28, 757497), (39, 543844), (42, 504998), (52, 407883), (78, 271922), (84, 252499), (91, 233076), (156, 135961), (182, 116538), (273, 77692), (364, 58269), (546, 38846), (1092, 19423)]