28507220

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{1531}}^1$

素因数の和:1573

約数の個数: 72

約数和(自身を含む): 73352160

約数和(自身を除く): 44844940

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 49, 70, 76, 95, 98, 133, 140, 190, 196, 245, 266, 380, 490, 532, 665, 931, 980, 1330, 1531, 1862, 2660, 3062, 3724, 4655, 6124, 7655, 9310, 10717, 15310, 18620, 21434, 29089, 30620, 42868, 53585, 58178, 75019, 107170, 116356, 145445, 150038, 203623, 214340, 290890, 300076, 375095, 407246, 581780, 750190, 814492, 1018115, 1425361, 1500380, 2036230, 2850722, 4072460, 5701444, 7126805, 14253610, 28507220]

約数ペア:

[(1, 28507220), (2, 14253610), (4, 7126805), (5, 5701444), (7, 4072460), (10, 2850722), (14, 2036230), (19, 1500380), (20, 1425361), (28, 1018115), (35, 814492), (38, 750190), (49, 581780), (70, 407246), (76, 375095), (95, 300076), (98, 290890), (133, 214340), (140, 203623), (190, 150038), (196, 145445), (245, 116356), (266, 107170), (380, 75019), (490, 58178), (532, 53585), (665, 42868), (931, 30620), (980, 29089), (1330, 21434), (1531, 18620), (1862, 15310), (2660, 10717), (3062, 9310), (3724, 7655), (4655, 6124)]