21505878

素因数分解:

$2^1\times 3^3\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{443}}^1$

素因数の和:514

約数の個数: 64

約数和(自身を含む): 51148800

約数和(自身を除く): 29642922

約数列:

[1, 2, 3, 6, 9, 18, 27, 29, 31, 54, 58, 62, 87, 93, 174, 186, 261, 279, 443, 522, 558, 783, 837, 886, 899, 1329, 1566, 1674, 1798, 2658, 2697, 3987, 5394, 7974, 8091, 11961, 12847, 13733, 16182, 23922, 24273, 25694, 27466, 38541, 41199, 48546, 77082, 82398, 115623, 123597, 231246, 247194, 346869, 370791, 398257, 693738, 741582, 796514, 1194771, 2389542, 3584313, 7168626, 10752939, 21505878]

約数ペア:

[(1, 21505878), (2, 10752939), (3, 7168626), (6, 3584313), (9, 2389542), (18, 1194771), (27, 796514), (29, 741582), (31, 693738), (54, 398257), (58, 370791), (62, 346869), (87, 247194), (93, 231246), (174, 123597), (186, 115623), (261, 82398), (279, 77082), (443, 48546), (522, 41199), (558, 38541), (783, 27466), (837, 25694), (886, 24273), (899, 23922), (1329, 16182), (1566, 13733), (1674, 12847), (1798, 11961), (2658, 8091), (2697, 7974), (3987, 5394)]