421211280

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{250721}}^1$

素因数の和:250744

約数の個数: 80

約数和(自身を含む): 1492297344

約数和(自身を除く): 1071086064

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 1680, 250721, 501442, 752163, 1002884, 1253605, 1504326, 1755047, 2005768, 2507210, 3008652, 3510094, 3760815, 4011536, 5014420, 5265141, 6017304, 7020188, 7521630, 8775235, 10028840, 10530282, 12034608, 14040376, 15043260, 17550470, 20057680, 21060564, 26325705, 28080752, 30086520, 35100940, 42121128, 52651410, 60173040, 70201880, 84242256, 105302820, 140403760, 210605640, 421211280]

約数ペア:

[(1, 421211280), (2, 210605640), (3, 140403760), (4, 105302820), (5, 84242256), (6, 70201880), (7, 60173040), (8, 52651410), (10, 42121128), (12, 35100940), (14, 30086520), (15, 28080752), (16, 26325705), (20, 21060564), (21, 20057680), (24, 17550470), (28, 15043260), (30, 14040376), (35, 12034608), (40, 10530282), (42, 10028840), (48, 8775235), (56, 7521630), (60, 7020188), (70, 6017304), (80, 5265141), (84, 5014420), (105, 4011536), (112, 3760815), (120, 3510094), (140, 3008652), (168, 2507210), (210, 2005768), (240, 1755047), (280, 1504326), (336, 1253605), (420, 1002884), (560, 752163), (840, 501442), (1680, 250721)]