20855040

素因数分解:

$2^8\times 3^1\times 5^1\times {\mathrm{5431}}^1$

素因数の和:5455

約数の個数: 72

約数和(自身を含む): 66618048

約数和(自身を除く): 45763008

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 128, 160, 192, 240, 256, 320, 384, 480, 640, 768, 960, 1280, 1920, 3840, 5431, 10862, 16293, 21724, 27155, 32586, 43448, 54310, 65172, 81465, 86896, 108620, 130344, 162930, 173792, 217240, 260688, 325860, 347584, 434480, 521376, 651720, 695168, 868960, 1042752, 1303440, 1390336, 1737920, 2085504, 2606880, 3475840, 4171008, 5213760, 6951680, 10427520, 20855040]

約数ペア:

[(1, 20855040), (2, 10427520), (3, 6951680), (4, 5213760), (5, 4171008), (6, 3475840), (8, 2606880), (10, 2085504), (12, 1737920), (15, 1390336), (16, 1303440), (20, 1042752), (24, 868960), (30, 695168), (32, 651720), (40, 521376), (48, 434480), (60, 347584), (64, 325860), (80, 260688), (96, 217240), (120, 173792), (128, 162930), (160, 130344), (192, 108620), (240, 86896), (256, 81465), (320, 65172), (384, 54310), (480, 43448), (640, 32586), (768, 27155), (960, 21724), (1280, 16293), (1920, 10862), (3840, 5431)]