681980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1$

素因数の和:126

約数の個数: 48

約数和(自身を含む): 1604064

約数和(自身を除く): 922084

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 43, 52, 61, 65, 86, 122, 130, 172, 215, 244, 260, 305, 430, 559, 610, 793, 860, 1118, 1220, 1586, 2236, 2623, 2795, 3172, 3965, 5246, 5590, 7930, 10492, 11180, 13115, 15860, 26230, 34099, 52460, 68198, 136396, 170495, 340990, 681980]

約数ペア:

[(1, 681980), (2, 340990), (4, 170495), (5, 136396), (10, 68198), (13, 52460), (20, 34099), (26, 26230), (43, 15860), (52, 13115), (61, 11180), (65, 10492), (86, 7930), (122, 5590), (130, 5246), (172, 3965), (215, 3172), (244, 2795), (260, 2623), (305, 2236), (430, 1586), (559, 1220), (610, 1118), (793, 860)]