28724290

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{31}}^2\times {\mathrm{61}}^1$

素因数の和:144

約数の個数: 72

約数和(自身を含む): 63166716

約数和(自身を除く): 34442426

約数列:

[1, 2, 5, 7, 10, 14, 31, 35, 49, 61, 62, 70, 98, 122, 155, 217, 245, 305, 310, 427, 434, 490, 610, 854, 961, 1085, 1519, 1891, 1922, 2135, 2170, 2989, 3038, 3782, 4270, 4805, 5978, 6727, 7595, 9455, 9610, 13237, 13454, 14945, 15190, 18910, 26474, 29890, 33635, 47089, 58621, 66185, 67270, 92659, 94178, 117242, 132370, 185318, 235445, 293105, 410347, 463295, 470890, 586210, 820694, 926590, 2051735, 2872429, 4103470, 5744858, 14362145, 28724290]

約数ペア:

[(1, 28724290), (2, 14362145), (5, 5744858), (7, 4103470), (10, 2872429), (14, 2051735), (31, 926590), (35, 820694), (49, 586210), (61, 470890), (62, 463295), (70, 410347), (98, 293105), (122, 235445), (155, 185318), (217, 132370), (245, 117242), (305, 94178), (310, 92659), (427, 67270), (434, 66185), (490, 58621), (610, 47089), (854, 33635), (961, 29890), (1085, 26474), (1519, 18910), (1891, 15190), (1922, 14945), (2135, 13454), (2170, 13237), (2989, 9610), (3038, 9455), (3782, 7595), (4270, 6727), (4805, 5978)]