20159178

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{661}}^1$

素因数の和:719

約数の個数: 64

約数和(自身を含む): 48045312

約数和(自身を除く): 27886134

約数列:

[1, 2, 3, 6, 13, 17, 23, 26, 34, 39, 46, 51, 69, 78, 102, 138, 221, 299, 391, 442, 598, 661, 663, 782, 897, 1173, 1322, 1326, 1794, 1983, 2346, 3966, 5083, 8593, 10166, 11237, 15203, 15249, 17186, 22474, 25779, 30406, 30498, 33711, 45609, 51558, 67422, 91218, 146081, 197639, 258451, 292162, 395278, 438243, 516902, 592917, 775353, 876486, 1185834, 1550706, 3359863, 6719726, 10079589, 20159178]

約数ペア:

[(1, 20159178), (2, 10079589), (3, 6719726), (6, 3359863), (13, 1550706), (17, 1185834), (23, 876486), (26, 775353), (34, 592917), (39, 516902), (46, 438243), (51, 395278), (69, 292162), (78, 258451), (102, 197639), (138, 146081), (221, 91218), (299, 67422), (391, 51558), (442, 45609), (598, 33711), (661, 30498), (663, 30406), (782, 25779), (897, 22474), (1173, 17186), (1322, 15249), (1326, 15203), (1794, 11237), (1983, 10166), (2346, 8593), (3966, 5083)]