31392921

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{41}}^1\times {\mathrm{101}}^1$

素因数の和:190

約数の個数: 48

約数和(自身を含む): 52230528

約数和(自身を除く): 20837607

約数列:

[1, 3, 7, 19, 21, 41, 57, 101, 123, 133, 287, 303, 361, 399, 707, 779, 861, 1083, 1919, 2121, 2337, 2527, 4141, 5453, 5757, 7581, 12423, 13433, 14801, 16359, 28987, 36461, 40299, 44403, 78679, 86961, 103607, 109383, 236037, 255227, 310821, 550753, 765681, 1494901, 1652259, 4484703, 10464307, 31392921]

約数ペア:

[(1, 31392921), (3, 10464307), (7, 4484703), (19, 1652259), (21, 1494901), (41, 765681), (57, 550753), (101, 310821), (123, 255227), (133, 236037), (287, 109383), (303, 103607), (361, 86961), (399, 78679), (707, 44403), (779, 40299), (861, 36461), (1083, 28987), (1919, 16359), (2121, 14801), (2337, 13433), (2527, 12423), (4141, 7581), (5453, 5757)]