978121900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{251}}^1\times {\mathrm{293}}^1$

素因数の和:584

約数の個数: 144

約数和(自身を含む): 2572335360

約数和(自身を除く): 1594213460

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 25, 28, 35, 38, 50, 70, 76, 95, 100, 133, 140, 175, 190, 251, 266, 293, 350, 380, 475, 502, 532, 586, 665, 700, 950, 1004, 1172, 1255, 1330, 1465, 1757, 1900, 2051, 2510, 2660, 2930, 3325, 3514, 4102, 4769, 5020, 5567, 5860, 6275, 6650, 7028, 7325, 8204, 8785, 9538, 10255, 11134, 12550, 13300, 14650, 17570, 19076, 20510, 22268, 23845, 25100, 27835, 29300, 33383, 35140, 38969, 41020, 43925, 47690, 51275, 55670, 66766, 73543, 77938, 87850, 95380, 102550, 111340, 119225, 133532, 139175, 147086, 155876, 166915, 175700, 194845, 205100, 238450, 278350, 294172, 333830, 367715, 389690, 476900, 514801, 556700, 667660, 735430, 779380, 834575, 974225, 1029602, 1397317, 1470860, 1669150, 1838575, 1948450, 2059204, 2574005, 2794634, 3338300, 3677150, 3896900, 5148010, 5589268, 6986585, 7354300, 9781219, 10296020, 12870025, 13973170, 19562438, 25740050, 27946340, 34932925, 39124876, 48906095, 51480100, 69865850, 97812190, 139731700, 195624380, 244530475, 489060950, 978121900]

約数ペア:

[(1, 978121900), (2, 489060950), (4, 244530475), (5, 195624380), (7, 139731700), (10, 97812190), (14, 69865850), (19, 51480100), (20, 48906095), (25, 39124876), (28, 34932925), (35, 27946340), (38, 25740050), (50, 19562438), (70, 13973170), (76, 12870025), (95, 10296020), (100, 9781219), (133, 7354300), (140, 6986585), (175, 5589268), (190, 5148010), (251, 3896900), (266, 3677150), (293, 3338300), (350, 2794634), (380, 2574005), (475, 2059204), (502, 1948450), (532, 1838575), (586, 1669150), (665, 1470860), (700, 1397317), (950, 1029602), (1004, 974225), (1172, 834575), (1255, 779380), (1330, 735430), (1465, 667660), (1757, 556700), (1900, 514801), (2051, 476900), (2510, 389690), (2660, 367715), (2930, 333830), (3325, 294172), (3514, 278350), (4102, 238450), (4769, 205100), (5020, 194845), (5567, 175700), (5860, 166915), (6275, 155876), (6650, 147086), (7028, 139175), (7325, 133532), (8204, 119225), (8785, 111340), (9538, 102550), (10255, 95380), (11134, 87850), (12550, 77938), (13300, 73543), (14650, 66766), (17570, 55670), (19076, 51275), (20510, 47690), (22268, 43925), (23845, 41020), (25100, 38969), (27835, 35140), (29300, 33383)]