20651001

素因数分解:

$3^1\times 7^4\times {\mathrm{47}}^1\times {\mathrm{61}}^1$

素因数の和:139

約数の個数: 40

約数和(自身を含む): 33343104

約数和(自身を除く): 12692103

約数列:

[1, 3, 7, 21, 47, 49, 61, 141, 147, 183, 329, 343, 427, 987, 1029, 1281, 2303, 2401, 2867, 2989, 6909, 7203, 8601, 8967, 16121, 20069, 20923, 48363, 60207, 62769, 112847, 140483, 146461, 338541, 421449, 439383, 983381, 2950143, 6883667, 20651001]

約数ペア:

[(1, 20651001), (3, 6883667), (7, 2950143), (21, 983381), (47, 439383), (49, 421449), (61, 338541), (141, 146461), (147, 140483), (183, 112847), (329, 62769), (343, 60207), (427, 48363), (987, 20923), (1029, 20069), (1281, 16121), (2303, 8967), (2401, 8601), (2867, 7203), (2989, 6909)]