21912280

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{42139}}^1$

素因数の和:42163

約数の個数: 32

約数和(自身を含む): 53096400

約数和(自身を除く): 31184120

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 42139, 84278, 168556, 210695, 337112, 421390, 547807, 842780, 1095614, 1685560, 2191228, 2739035, 4382456, 5478070, 10956140, 21912280]

約数ペア:

[(1, 21912280), (2, 10956140), (4, 5478070), (5, 4382456), (8, 2739035), (10, 2191228), (13, 1685560), (20, 1095614), (26, 842780), (40, 547807), (52, 421390), (65, 337112), (104, 210695), (130, 168556), (260, 84278), (520, 42139)]