19430720

素因数分解:

$2^6\times 5^1\times {\mathrm{41}}^1\times {\mathrm{1481}}^1$

素因数の和:1539

約数の個数: 56

約数和(自身を含む): 47429928

約数和(自身を除く): 27999208

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 64, 80, 82, 160, 164, 205, 320, 328, 410, 656, 820, 1312, 1481, 1640, 2624, 2962, 3280, 5924, 6560, 7405, 11848, 13120, 14810, 23696, 29620, 47392, 59240, 60721, 94784, 118480, 121442, 236960, 242884, 303605, 473920, 485768, 607210, 971536, 1214420, 1943072, 2428840, 3886144, 4857680, 9715360, 19430720]

約数ペア:

[(1, 19430720), (2, 9715360), (4, 4857680), (5, 3886144), (8, 2428840), (10, 1943072), (16, 1214420), (20, 971536), (32, 607210), (40, 485768), (41, 473920), (64, 303605), (80, 242884), (82, 236960), (160, 121442), (164, 118480), (205, 94784), (320, 60721), (328, 59240), (410, 47392), (656, 29620), (820, 23696), (1312, 14810), (1481, 13120), (1640, 11848), (2624, 7405), (2962, 6560), (3280, 5924)]