28380680

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{349}}^1$

素因数の和:486

約数の個数: 64

約数和(自身を含む): 68040000

約数和(自身を除く): 39659320

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 107, 152, 190, 214, 349, 380, 428, 535, 698, 760, 856, 1070, 1396, 1745, 2033, 2140, 2792, 3490, 4066, 4280, 6631, 6980, 8132, 10165, 13262, 13960, 16264, 20330, 26524, 33155, 37343, 40660, 53048, 66310, 74686, 81320, 132620, 149372, 186715, 265240, 298744, 373430, 709517, 746860, 1419034, 1493720, 2838068, 3547585, 5676136, 7095170, 14190340, 28380680]

約数ペア:

[(1, 28380680), (2, 14190340), (4, 7095170), (5, 5676136), (8, 3547585), (10, 2838068), (19, 1493720), (20, 1419034), (38, 746860), (40, 709517), (76, 373430), (95, 298744), (107, 265240), (152, 186715), (190, 149372), (214, 132620), (349, 81320), (380, 74686), (428, 66310), (535, 53048), (698, 40660), (760, 37343), (856, 33155), (1070, 26524), (1396, 20330), (1745, 16264), (2033, 13960), (2140, 13262), (2792, 10165), (3490, 8132), (4066, 6980), (4280, 6631)]