21391482

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{6977}}^1$

素因数の和:7062

約数の個数: 32

約数和(自身を含む): 49571712

約数和(自身を除く): 28180230

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 73, 146, 219, 438, 511, 1022, 1533, 3066, 6977, 13954, 20931, 41862, 48839, 97678, 146517, 293034, 509321, 1018642, 1527963, 3055926, 3565247, 7130494, 10695741, 21391482]

約数ペア:

[(1, 21391482), (2, 10695741), (3, 7130494), (6, 3565247), (7, 3055926), (14, 1527963), (21, 1018642), (42, 509321), (73, 293034), (146, 146517), (219, 97678), (438, 48839), (511, 41862), (1022, 20931), (1533, 13954), (3066, 6977)]