31428280

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{3181}}^1$

素因数の和:3224

約数の個数: 64

約数和(自身を含む): 80186400

約数和(自身を除く): 48758120

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 26, 38, 40, 52, 65, 76, 95, 104, 130, 152, 190, 247, 260, 380, 494, 520, 760, 988, 1235, 1976, 2470, 3181, 4940, 6362, 9880, 12724, 15905, 25448, 31810, 41353, 60439, 63620, 82706, 120878, 127240, 165412, 206765, 241756, 302195, 330824, 413530, 483512, 604390, 785707, 827060, 1208780, 1571414, 1654120, 2417560, 3142828, 3928535, 6285656, 7857070, 15714140, 31428280]

約数ペア:

[(1, 31428280), (2, 15714140), (4, 7857070), (5, 6285656), (8, 3928535), (10, 3142828), (13, 2417560), (19, 1654120), (20, 1571414), (26, 1208780), (38, 827060), (40, 785707), (52, 604390), (65, 483512), (76, 413530), (95, 330824), (104, 302195), (130, 241756), (152, 206765), (190, 165412), (247, 127240), (260, 120878), (380, 82706), (494, 63620), (520, 60439), (760, 41353), (988, 31810), (1235, 25448), (1976, 15905), (2470, 12724), (3181, 9880), (4940, 6362)]