399720076

素因数分解:

$2^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{3313}}^1$

素因数の和:3494

約数の個数: 48

約数和(自身を含む): 831416320

約数和(自身を除く): 431696244

約数列:

[1, 2, 4, 7, 14, 28, 31, 62, 124, 139, 217, 278, 434, 556, 868, 973, 1946, 3313, 3892, 4309, 6626, 8618, 13252, 17236, 23191, 30163, 46382, 60326, 92764, 102703, 120652, 205406, 410812, 460507, 718921, 921014, 1437842, 1842028, 2875684, 3223549, 6447098, 12894196, 14275717, 28551434, 57102868, 99930019, 199860038, 399720076]

約数ペア:

[(1, 399720076), (2, 199860038), (4, 99930019), (7, 57102868), (14, 28551434), (28, 14275717), (31, 12894196), (62, 6447098), (124, 3223549), (139, 2875684), (217, 1842028), (278, 1437842), (434, 921014), (556, 718921), (868, 460507), (973, 410812), (1946, 205406), (3313, 120652), (3892, 102703), (4309, 92764), (6626, 60326), (8618, 46382), (13252, 30163), (17236, 23191)]