21157308

素因数分解:

$2^2\times 3^3\times {\mathrm{227}}^1\times {\mathrm{863}}^1$

素因数の和:1103

約数の個数: 48

約数和(自身を含む): 55157760

約数和(自身を除く): 34000452

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 108, 227, 454, 681, 863, 908, 1362, 1726, 2043, 2589, 2724, 3452, 4086, 5178, 6129, 7767, 8172, 10356, 12258, 15534, 23301, 24516, 31068, 46602, 93204, 195901, 391802, 587703, 783604, 1175406, 1763109, 2350812, 3526218, 5289327, 7052436, 10578654, 21157308]

約数ペア:

[(1, 21157308), (2, 10578654), (3, 7052436), (4, 5289327), (6, 3526218), (9, 2350812), (12, 1763109), (18, 1175406), (27, 783604), (36, 587703), (54, 391802), (108, 195901), (227, 93204), (454, 46602), (681, 31068), (863, 24516), (908, 23301), (1362, 15534), (1726, 12258), (2043, 10356), (2589, 8172), (2724, 7767), (3452, 6129), (4086, 5178)]