1280810180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{69383}}^1$

素因数の和:69476

約数の個数: 48

約数和(自身を含む): 2937441024

約数和(自身を除く): 1656630844

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 71, 130, 142, 260, 284, 355, 710, 923, 1420, 1846, 3692, 4615, 9230, 18460, 69383, 138766, 277532, 346915, 693830, 901979, 1387660, 1803958, 3607916, 4509895, 4926193, 9019790, 9852386, 18039580, 19704772, 24630965, 49261930, 64040509, 98523860, 128081018, 256162036, 320202545, 640405090, 1280810180]

約数ペア:

[(1, 1280810180), (2, 640405090), (4, 320202545), (5, 256162036), (10, 128081018), (13, 98523860), (20, 64040509), (26, 49261930), (52, 24630965), (65, 19704772), (71, 18039580), (130, 9852386), (142, 9019790), (260, 4926193), (284, 4509895), (355, 3607916), (710, 1803958), (923, 1387660), (1420, 901979), (1846, 693830), (3692, 346915), (4615, 277532), (9230, 138766), (18460, 69383)]