21015036

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{89}}^1\times {\mathrm{937}}^1$

素因数の和:1043

約数の個数: 72

約数和(自身を含む): 61457760

約数和(自身を除く): 40442724

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 89, 126, 178, 252, 267, 356, 534, 623, 801, 937, 1068, 1246, 1602, 1869, 1874, 2492, 2811, 3204, 3738, 3748, 5607, 5622, 6559, 7476, 8433, 11214, 11244, 13118, 16866, 19677, 22428, 26236, 33732, 39354, 59031, 78708, 83393, 118062, 166786, 236124, 250179, 333572, 500358, 583751, 750537, 1000716, 1167502, 1501074, 1751253, 2335004, 3002148, 3502506, 5253759, 7005012, 10507518, 21015036]

約数ペア:

[(1, 21015036), (2, 10507518), (3, 7005012), (4, 5253759), (6, 3502506), (7, 3002148), (9, 2335004), (12, 1751253), (14, 1501074), (18, 1167502), (21, 1000716), (28, 750537), (36, 583751), (42, 500358), (63, 333572), (84, 250179), (89, 236124), (126, 166786), (178, 118062), (252, 83393), (267, 78708), (356, 59031), (534, 39354), (623, 33732), (801, 26236), (937, 22428), (1068, 19677), (1246, 16866), (1602, 13118), (1869, 11244), (1874, 11214), (2492, 8433), (2811, 7476), (3204, 6559), (3738, 5622), (3748, 5607)]