28735380

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{263}}^1\times {\mathrm{607}}^1$

素因数の和:885

約数の個数: 72

約数和(自身を含む): 87639552

約数和(自身を除く): 58904172

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 263, 526, 607, 789, 1052, 1214, 1315, 1578, 1821, 2367, 2428, 2630, 3035, 3156, 3642, 3945, 4734, 5260, 5463, 6070, 7284, 7890, 9105, 9468, 10926, 11835, 12140, 15780, 18210, 21852, 23670, 27315, 36420, 47340, 54630, 109260, 159641, 319282, 478923, 638564, 798205, 957846, 1436769, 1596410, 1915692, 2394615, 2873538, 3192820, 4789230, 5747076, 7183845, 9578460, 14367690, 28735380]

約数ペア:

[(1, 28735380), (2, 14367690), (3, 9578460), (4, 7183845), (5, 5747076), (6, 4789230), (9, 3192820), (10, 2873538), (12, 2394615), (15, 1915692), (18, 1596410), (20, 1436769), (30, 957846), (36, 798205), (45, 638564), (60, 478923), (90, 319282), (180, 159641), (263, 109260), (526, 54630), (607, 47340), (789, 36420), (1052, 27315), (1214, 23670), (1315, 21852), (1578, 18210), (1821, 15780), (2367, 12140), (2428, 11835), (2630, 10926), (3035, 9468), (3156, 9105), (3642, 7890), (3945, 7284), (4734, 6070), (5260, 5463)]