21656538

素因数分解:

$2^1\times 3^3\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{761}}^1$

素因数の和:820

約数の個数: 64

約数和(自身を含む): 52669440

約数和(自身を除く): 31012902

約数列:

[1, 2, 3, 6, 9, 17, 18, 27, 31, 34, 51, 54, 62, 93, 102, 153, 186, 279, 306, 459, 527, 558, 761, 837, 918, 1054, 1522, 1581, 1674, 2283, 3162, 4566, 4743, 6849, 9486, 12937, 13698, 14229, 20547, 23591, 25874, 28458, 38811, 41094, 47182, 70773, 77622, 116433, 141546, 212319, 232866, 349299, 401047, 424638, 636957, 698598, 802094, 1203141, 1273914, 2406282, 3609423, 7218846, 10828269, 21656538]

約数ペア:

[(1, 21656538), (2, 10828269), (3, 7218846), (6, 3609423), (9, 2406282), (17, 1273914), (18, 1203141), (27, 802094), (31, 698598), (34, 636957), (51, 424638), (54, 401047), (62, 349299), (93, 232866), (102, 212319), (153, 141546), (186, 116433), (279, 77622), (306, 70773), (459, 47182), (527, 41094), (558, 38811), (761, 28458), (837, 25874), (918, 23591), (1054, 20547), (1522, 14229), (1581, 13698), (1674, 12937), (2283, 9486), (3162, 6849), (4566, 4743)]