398426340

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{510803}}^1$

素因数の和:510828

約数の個数: 48

約数和(自身を含む): 1201411008

約数和(自身を除く): 802984668

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 510803, 1021606, 1532409, 2043212, 2554015, 3064818, 5108030, 6129636, 6640439, 7662045, 10216060, 13280878, 15324090, 19921317, 26561756, 30648180, 33202195, 39842634, 66404390, 79685268, 99606585, 132808780, 199213170, 398426340]

約数ペア:

[(1, 398426340), (2, 199213170), (3, 132808780), (4, 99606585), (5, 79685268), (6, 66404390), (10, 39842634), (12, 33202195), (13, 30648180), (15, 26561756), (20, 19921317), (26, 15324090), (30, 13280878), (39, 10216060), (52, 7662045), (60, 6640439), (65, 6129636), (78, 5108030), (130, 3064818), (156, 2554015), (195, 2043212), (260, 1532409), (390, 1021606), (780, 510803)]