31217920

素因数分解:

$2^8\times 5^1\times {\mathrm{29}}^3$

素因数の和:108

約数の個数: 72

約数和(自身を含む): 77447160

約数和(自身を除く): 46229240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 58, 64, 80, 116, 128, 145, 160, 232, 256, 290, 320, 464, 580, 640, 841, 928, 1160, 1280, 1682, 1856, 2320, 3364, 3712, 4205, 4640, 6728, 7424, 8410, 9280, 13456, 16820, 18560, 24389, 26912, 33640, 37120, 48778, 53824, 67280, 97556, 107648, 121945, 134560, 195112, 215296, 243890, 269120, 390224, 487780, 538240, 780448, 975560, 1076480, 1560896, 1951120, 3121792, 3902240, 6243584, 7804480, 15608960, 31217920]

約数ペア:

[(1, 31217920), (2, 15608960), (4, 7804480), (5, 6243584), (8, 3902240), (10, 3121792), (16, 1951120), (20, 1560896), (29, 1076480), (32, 975560), (40, 780448), (58, 538240), (64, 487780), (80, 390224), (116, 269120), (128, 243890), (145, 215296), (160, 195112), (232, 134560), (256, 121945), (290, 107648), (320, 97556), (464, 67280), (580, 53824), (640, 48778), (841, 37120), (928, 33640), (1160, 26912), (1280, 24389), (1682, 18560), (1856, 16820), (2320, 13456), (3364, 9280), (3712, 8410), (4205, 7424), (4640, 6728)]