21269560

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{40903}}^1$

素因数の和:40927

約数の個数: 32

約数和(自身を含む): 51539040

約数和(自身を除く): 30269480

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 40903, 81806, 163612, 204515, 327224, 409030, 531739, 818060, 1063478, 1636120, 2126956, 2658695, 4253912, 5317390, 10634780, 21269560]

約数ペア:

[(1, 21269560), (2, 10634780), (4, 5317390), (5, 4253912), (8, 2658695), (10, 2126956), (13, 1636120), (20, 1063478), (26, 818060), (40, 531739), (52, 409030), (65, 327224), (104, 204515), (130, 163612), (260, 81806), (520, 40903)]