28454020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{563}}^1$

素因数の和:617

約数の個数: 72

約数和(自身を含む): 72201024

約数和(自身を除く): 43747004

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 76, 95, 133, 140, 190, 266, 361, 380, 532, 563, 665, 722, 1126, 1330, 1444, 1805, 2252, 2527, 2660, 2815, 3610, 3941, 5054, 5630, 7220, 7882, 10108, 10697, 11260, 12635, 15764, 19705, 21394, 25270, 39410, 42788, 50540, 53485, 74879, 78820, 106970, 149758, 203243, 213940, 299516, 374395, 406486, 748790, 812972, 1016215, 1422701, 1497580, 2032430, 2845402, 4064860, 5690804, 7113505, 14227010, 28454020]

約数ペア:

[(1, 28454020), (2, 14227010), (4, 7113505), (5, 5690804), (7, 4064860), (10, 2845402), (14, 2032430), (19, 1497580), (20, 1422701), (28, 1016215), (35, 812972), (38, 748790), (70, 406486), (76, 374395), (95, 299516), (133, 213940), (140, 203243), (190, 149758), (266, 106970), (361, 78820), (380, 74879), (532, 53485), (563, 50540), (665, 42788), (722, 39410), (1126, 25270), (1330, 21394), (1444, 19705), (1805, 15764), (2252, 12635), (2527, 11260), (2660, 10697), (2815, 10108), (3610, 7882), (3941, 7220), (5054, 5630)]