90405380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{463}}^1\times {\mathrm{751}}^1$

素因数の和:1236

約数の個数: 48

約数和(自身を含む): 205169664

約数和(自身を除く): 114764284

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 463, 751, 926, 1502, 1852, 2315, 3004, 3755, 4630, 6019, 7510, 9260, 9763, 12038, 15020, 19526, 24076, 30095, 39052, 48815, 60190, 97630, 120380, 195260, 347713, 695426, 1390852, 1738565, 3477130, 4520269, 6954260, 9040538, 18081076, 22601345, 45202690, 90405380]

約数ペア:

[(1, 90405380), (2, 45202690), (4, 22601345), (5, 18081076), (10, 9040538), (13, 6954260), (20, 4520269), (26, 3477130), (52, 1738565), (65, 1390852), (130, 695426), (260, 347713), (463, 195260), (751, 120380), (926, 97630), (1502, 60190), (1852, 48815), (2315, 39052), (3004, 30095), (3755, 24076), (4630, 19526), (6019, 15020), (7510, 12038), (9260, 9763)]