20804563129

素因数分解:

$7^3\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{131}}^1\times {\mathrm{491}}^1$

素因数の和:707

約数の個数: 64

約数和(自身を含む): 26185420800

約数和(自身を除く): 5380857671

約数列:

[1, 7, 23, 41, 49, 131, 161, 287, 343, 491, 917, 943, 1127, 2009, 3013, 3437, 5371, 6419, 6601, 7889, 11293, 14063, 20131, 21091, 24059, 37597, 44933, 46207, 64321, 79051, 123533, 140917, 147637, 168413, 263179, 323449, 450247, 463013, 553357, 864731, 986419, 1033459, 1479383, 1842253, 2637161, 3151729, 3241091, 3873499, 6053117, 6904933, 10355681, 18460127, 22062103, 22687637, 42371819, 60654703, 72489767, 129220889, 158813459, 424582921, 507428369, 904546223, 2972080447, 20804563129]

約数ペア:

[(1, 20804563129), (7, 2972080447), (23, 904546223), (41, 507428369), (49, 424582921), (131, 158813459), (161, 129220889), (287, 72489767), (343, 60654703), (491, 42371819), (917, 22687637), (943, 22062103), (1127, 18460127), (2009, 10355681), (3013, 6904933), (3437, 6053117), (5371, 3873499), (6419, 3241091), (6601, 3151729), (7889, 2637161), (11293, 1842253), (14063, 1479383), (20131, 1033459), (21091, 986419), (24059, 864731), (37597, 553357), (44933, 463013), (46207, 450247), (64321, 323449), (79051, 263179), (123533, 168413), (140917, 147637)]