21639436

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{269}}^1$

素因数の和:323

約数の個数: 72

約数和(自身を含む): 49805280

約数和(自身を除く): 28165844

約数列:

[1, 2, 4, 7, 13, 14, 17, 26, 28, 34, 52, 68, 91, 119, 169, 182, 221, 238, 269, 338, 364, 442, 476, 538, 676, 884, 1076, 1183, 1547, 1883, 2366, 2873, 3094, 3497, 3766, 4573, 4732, 5746, 6188, 6994, 7532, 9146, 11492, 13988, 18292, 20111, 24479, 32011, 40222, 45461, 48958, 59449, 64022, 80444, 90922, 97916, 118898, 128044, 181844, 237796, 318227, 416143, 636454, 772837, 832286, 1272908, 1545674, 1664572, 3091348, 5409859, 10819718, 21639436]

約数ペア:

[(1, 21639436), (2, 10819718), (4, 5409859), (7, 3091348), (13, 1664572), (14, 1545674), (17, 1272908), (26, 832286), (28, 772837), (34, 636454), (52, 416143), (68, 318227), (91, 237796), (119, 181844), (169, 128044), (182, 118898), (221, 97916), (238, 90922), (269, 80444), (338, 64022), (364, 59449), (442, 48958), (476, 45461), (538, 40222), (676, 32011), (884, 24479), (1076, 20111), (1183, 18292), (1547, 13988), (1883, 11492), (2366, 9146), (2873, 7532), (3094, 6994), (3497, 6188), (3766, 5746), (4573, 4732)]