21318646

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{541}}^1$

素因数の和:640

約数の個数: 32

約数和(自身を含む): 36292320

約数和(自身を除く): 14973674

約数列:

[1, 2, 17, 19, 34, 38, 61, 122, 323, 541, 646, 1037, 1082, 1159, 2074, 2318, 9197, 10279, 18394, 19703, 20558, 33001, 39406, 66002, 174743, 349486, 561017, 627019, 1122034, 1254038, 10659323, 21318646]

約数ペア:

[(1, 21318646), (2, 10659323), (17, 1254038), (19, 1122034), (34, 627019), (38, 561017), (61, 349486), (122, 174743), (323, 66002), (541, 39406), (646, 33001), (1037, 20558), (1082, 19703), (1159, 18394), (2074, 10279), (2318, 9197)]