281978060

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{154933}}^1$

素因数の和:154962

約数の個数: 48

約数和(自身を含む): 728809536

約数和(自身を除く): 446831476

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 154933, 309866, 619732, 774665, 1084531, 1549330, 2014129, 2169062, 3098660, 4028258, 4338124, 5422655, 8056516, 10070645, 10845310, 14098903, 20141290, 21690620, 28197806, 40282580, 56395612, 70494515, 140989030, 281978060]

約数ペア:

[(1, 281978060), (2, 140989030), (4, 70494515), (5, 56395612), (7, 40282580), (10, 28197806), (13, 21690620), (14, 20141290), (20, 14098903), (26, 10845310), (28, 10070645), (35, 8056516), (52, 5422655), (65, 4338124), (70, 4028258), (91, 3098660), (130, 2169062), (140, 2014129), (182, 1549330), (260, 1084531), (364, 774665), (455, 619732), (910, 309866), (1820, 154933)]