28656420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{36739}}^1$

素因数の和:36764

約数の個数: 48

約数和(自身を含む): 86412480

約数和(自身を除く): 57756060

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 36739, 73478, 110217, 146956, 183695, 220434, 367390, 440868, 477607, 551085, 734780, 955214, 1102170, 1432821, 1910428, 2204340, 2388035, 2865642, 4776070, 5731284, 7164105, 9552140, 14328210, 28656420]

約数ペア:

[(1, 28656420), (2, 14328210), (3, 9552140), (4, 7164105), (5, 5731284), (6, 4776070), (10, 2865642), (12, 2388035), (13, 2204340), (15, 1910428), (20, 1432821), (26, 1102170), (30, 955214), (39, 734780), (52, 551085), (60, 477607), (65, 440868), (78, 367390), (130, 220434), (156, 183695), (195, 146956), (260, 110217), (390, 73478), (780, 36739)]