19905655

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{347}}^1$

素因数の和:519

約数の個数: 32

約数和(自身を含む): 30067200

約数和(自身を除く): 10161545

約数列:

[1, 5, 7, 11, 35, 55, 77, 149, 347, 385, 745, 1043, 1639, 1735, 2429, 3817, 5215, 8195, 11473, 12145, 19085, 26719, 51703, 57365, 133595, 258515, 361921, 568733, 1809605, 2843665, 3981131, 19905655]

約数ペア:

[(1, 19905655), (5, 3981131), (7, 2843665), (11, 1809605), (35, 568733), (55, 361921), (77, 258515), (149, 133595), (347, 57365), (385, 51703), (745, 26719), (1043, 19085), (1639, 12145), (1735, 11473), (2429, 8195), (3817, 5215)]