28877660

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{79}}^1\times {\mathrm{373}}^1$

素因数の和:475

約数の個数: 72

約数和(自身を含む): 71628480

約数和(自身を除く): 42750820

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 79, 98, 140, 158, 196, 245, 316, 373, 395, 490, 553, 746, 790, 980, 1106, 1492, 1580, 1865, 2212, 2611, 2765, 3730, 3871, 5222, 5530, 7460, 7742, 10444, 11060, 13055, 15484, 18277, 19355, 26110, 29467, 36554, 38710, 52220, 58934, 73108, 77420, 91385, 117868, 147335, 182770, 206269, 294670, 365540, 412538, 589340, 825076, 1031345, 1443883, 2062690, 2887766, 4125380, 5775532, 7219415, 14438830, 28877660]

約数ペア:

[(1, 28877660), (2, 14438830), (4, 7219415), (5, 5775532), (7, 4125380), (10, 2887766), (14, 2062690), (20, 1443883), (28, 1031345), (35, 825076), (49, 589340), (70, 412538), (79, 365540), (98, 294670), (140, 206269), (158, 182770), (196, 147335), (245, 117868), (316, 91385), (373, 77420), (395, 73108), (490, 58934), (553, 52220), (746, 38710), (790, 36554), (980, 29467), (1106, 26110), (1492, 19355), (1580, 18277), (1865, 15484), (2212, 13055), (2611, 11060), (2765, 10444), (3730, 7742), (3871, 7460), (5222, 5530)]