8865740

素因数分解:

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

素因数の和:139

約数の個数: 72

約数和(自身を含む): 20967408

約数和(自身を除く): 12101668

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 43, 52, 61, 65, 86, 122, 130, 169, 172, 215, 244, 260, 305, 338, 430, 559, 610, 676, 793, 845, 860, 1118, 1220, 1586, 1690, 2236, 2623, 2795, 3172, 3380, 3965, 5246, 5590, 7267, 7930, 10309, 10492, 11180, 13115, 14534, 15860, 20618, 26230, 29068, 34099, 36335, 41236, 51545, 52460, 68198, 72670, 103090, 136396, 145340, 170495, 206180, 340990, 443287, 681980, 886574, 1773148, 2216435, 4432870, 8865740]

約数ペア:

[(1, 8865740), (2, 4432870), (4, 2216435), (5, 1773148), (10, 886574), (13, 681980), (20, 443287), (26, 340990), (43, 206180), (52, 170495), (61, 145340), (65, 136396), (86, 103090), (122, 72670), (130, 68198), (169, 52460), (172, 51545), (215, 41236), (244, 36335), (260, 34099), (305, 29068), (338, 26230), (430, 20618), (559, 15860), (610, 14534), (676, 13115), (793, 11180), (845, 10492), (860, 10309), (1118, 7930), (1220, 7267), (1586, 5590), (1690, 5246), (2236, 3965), (2623, 3380), (2795, 3172)]