21999055

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{379}}^1$

素因数の和:463

約数の個数: 32

約数和(自身を含む): 30643200

約数和(自身を除く): 8644145

約数列:

[1, 5, 13, 19, 47, 65, 95, 235, 247, 379, 611, 893, 1235, 1895, 3055, 4465, 4927, 7201, 11609, 17813, 24635, 36005, 58045, 89065, 93613, 231569, 338447, 468065, 1157845, 1692235, 4399811, 21999055]

約数ペア:

[(1, 21999055), (5, 4399811), (13, 1692235), (19, 1157845), (47, 468065), (65, 338447), (95, 231569), (235, 93613), (247, 89065), (379, 58045), (611, 36005), (893, 24635), (1235, 17813), (1895, 11609), (3055, 7201), (4465, 4927)]