78474760

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{21559}}^1$

素因数の和:21590

約数の個数: 64

約数和(自身を含む): 217324800

約数和(自身を除く): 138850040

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 364, 455, 520, 728, 910, 1820, 3640, 21559, 43118, 86236, 107795, 150913, 172472, 215590, 280267, 301826, 431180, 560534, 603652, 754565, 862360, 1121068, 1207304, 1401335, 1509130, 1961869, 2242136, 2802670, 3018260, 3923738, 5605340, 6036520, 7847476, 9809345, 11210680, 15694952, 19618690, 39237380, 78474760]

約数ペア:

[(1, 78474760), (2, 39237380), (4, 19618690), (5, 15694952), (7, 11210680), (8, 9809345), (10, 7847476), (13, 6036520), (14, 5605340), (20, 3923738), (26, 3018260), (28, 2802670), (35, 2242136), (40, 1961869), (52, 1509130), (56, 1401335), (65, 1207304), (70, 1121068), (91, 862360), (104, 754565), (130, 603652), (140, 560534), (182, 431180), (260, 301826), (280, 280267), (364, 215590), (455, 172472), (520, 150913), (728, 107795), (910, 86236), (1820, 43118), (3640, 21559)]