20314520

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{311}}^1$

素因数の和:416

約数の個数: 64

約数和(自身を含む): 48522240

約数和(自身を除く): 28207720

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 71, 92, 115, 142, 184, 230, 284, 311, 355, 460, 568, 622, 710, 920, 1244, 1420, 1555, 1633, 2488, 2840, 3110, 3266, 6220, 6532, 7153, 8165, 12440, 13064, 14306, 16330, 22081, 28612, 32660, 35765, 44162, 57224, 65320, 71530, 88324, 110405, 143060, 176648, 220810, 286120, 441620, 507863, 883240, 1015726, 2031452, 2539315, 4062904, 5078630, 10157260, 20314520]

約数ペア:

[(1, 20314520), (2, 10157260), (4, 5078630), (5, 4062904), (8, 2539315), (10, 2031452), (20, 1015726), (23, 883240), (40, 507863), (46, 441620), (71, 286120), (92, 220810), (115, 176648), (142, 143060), (184, 110405), (230, 88324), (284, 71530), (311, 65320), (355, 57224), (460, 44162), (568, 35765), (622, 32660), (710, 28612), (920, 22081), (1244, 16330), (1420, 14306), (1555, 13064), (1633, 12440), (2488, 8165), (2840, 7153), (3110, 6532), (3266, 6220)]