21789795.000000000

素因数分解:

$2^4\times 3^1\times {\mathrm{13}}^1\times {\mathrm{1109167}}^1$

素因数の和:1109191

約数の個数: 40

約数和(自身を含む): 1925515648

約数和(自身を除く): 1233395440

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 39, 48, 52, 78, 104, 156, 208, 312, 624, 1109167, 2218334, 3327501, 4436668, 6655002, 8873336, 13310004, 14419171, 17746672, 26620008, 28838342, 43257513, 53240016, 57676684, 86515026, 115353368, 173030052, 230706736, 346060104, 692120208]

約数ペア:

[(1, 692120208), (2, 346060104), (3, 230706736), (4, 173030052), (6, 115353368), (8, 86515026), (12, 57676684), (13, 53240016), (16, 43257513), (24, 28838342), (26, 26620008), (39, 17746672), (48, 14419171), (52, 13310004), (78, 8873336), (104, 6655002), (156, 4436668), (208, 3327501), (312, 2218334), (624, 1109167)]