28920840

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{18539}}^1$

素因数の和:18566

約数の個数: 64

約数和(自身を含む): 93441600

約数和(自身を除く): 64520760

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 780, 1560, 18539, 37078, 55617, 74156, 92695, 111234, 148312, 185390, 222468, 241007, 278085, 370780, 444936, 482014, 556170, 723021, 741560, 964028, 1112340, 1205035, 1446042, 1928056, 2224680, 2410070, 2892084, 3615105, 4820140, 5784168, 7230210, 9640280, 14460420, 28920840]

約数ペア:

[(1, 28920840), (2, 14460420), (3, 9640280), (4, 7230210), (5, 5784168), (6, 4820140), (8, 3615105), (10, 2892084), (12, 2410070), (13, 2224680), (15, 1928056), (20, 1446042), (24, 1205035), (26, 1112340), (30, 964028), (39, 741560), (40, 723021), (52, 556170), (60, 482014), (65, 444936), (78, 370780), (104, 278085), (120, 241007), (130, 222468), (156, 185390), (195, 148312), (260, 111234), (312, 92695), (390, 74156), (520, 55617), (780, 37078), (1560, 18539)]