21072996

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{4919}}^1$

素因数の和:4953

約数の個数: 72

約数和(自身を含む): 64471680

約数和(自身を除く): 43398684

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 17, 18, 21, 28, 34, 36, 42, 51, 63, 68, 84, 102, 119, 126, 153, 204, 238, 252, 306, 357, 476, 612, 714, 1071, 1428, 2142, 4284, 4919, 9838, 14757, 19676, 29514, 34433, 44271, 59028, 68866, 83623, 88542, 103299, 137732, 167246, 177084, 206598, 250869, 309897, 334492, 413196, 501738, 585361, 619794, 752607, 1003476, 1170722, 1239588, 1505214, 1756083, 2341444, 3010428, 3512166, 5268249, 7024332, 10536498, 21072996]

約数ペア:

[(1, 21072996), (2, 10536498), (3, 7024332), (4, 5268249), (6, 3512166), (7, 3010428), (9, 2341444), (12, 1756083), (14, 1505214), (17, 1239588), (18, 1170722), (21, 1003476), (28, 752607), (34, 619794), (36, 585361), (42, 501738), (51, 413196), (63, 334492), (68, 309897), (84, 250869), (102, 206598), (119, 177084), (126, 167246), (153, 137732), (204, 103299), (238, 88542), (252, 83623), (306, 68866), (357, 59028), (476, 44271), (612, 34433), (714, 29514), (1071, 19676), (1428, 14757), (2142, 9838), (4284, 4919)]