19806720

素因数分解:

$2^9\times 3^1\times 5^1\times {\mathrm{2579}}^1$

素因数の和:2605

約数の個数: 80

約数和(自身を含む): 63344160

約数和(自身を除く): 43537440

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, 512, 640, 768, 960, 1280, 1536, 1920, 2560, 2579, 3840, 5158, 7680, 7737, 10316, 12895, 15474, 20632, 25790, 30948, 38685, 41264, 51580, 61896, 77370, 82528, 103160, 123792, 154740, 165056, 206320, 247584, 309480, 330112, 412640, 495168, 618960, 660224, 825280, 990336, 1237920, 1320448, 1650560, 1980672, 2475840, 3301120, 3961344, 4951680, 6602240, 9903360, 19806720]

約数ペア:

[(1, 19806720), (2, 9903360), (3, 6602240), (4, 4951680), (5, 3961344), (6, 3301120), (8, 2475840), (10, 1980672), (12, 1650560), (15, 1320448), (16, 1237920), (20, 990336), (24, 825280), (30, 660224), (32, 618960), (40, 495168), (48, 412640), (60, 330112), (64, 309480), (80, 247584), (96, 206320), (120, 165056), (128, 154740), (160, 123792), (192, 103160), (240, 82528), (256, 77370), (320, 61896), (384, 51580), (480, 41264), (512, 38685), (640, 30948), (768, 25790), (960, 20632), (1280, 15474), (1536, 12895), (1920, 10316), (2560, 7737), (2579, 7680), (3840, 5158)]