21458340

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{1229}}^1$

素因数の和:1341

約数の個数: 72

約数和(自身を含む): 65814840

約数和(自身を除く): 44356500

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 97, 180, 194, 291, 388, 485, 582, 873, 970, 1164, 1229, 1455, 1746, 1940, 2458, 2910, 3492, 3687, 4365, 4916, 5820, 6145, 7374, 8730, 11061, 12290, 14748, 17460, 18435, 22122, 24580, 36870, 44244, 55305, 73740, 110610, 119213, 221220, 238426, 357639, 476852, 596065, 715278, 1072917, 1192130, 1430556, 1788195, 2145834, 2384260, 3576390, 4291668, 5364585, 7152780, 10729170, 21458340]

約数ペア:

[(1, 21458340), (2, 10729170), (3, 7152780), (4, 5364585), (5, 4291668), (6, 3576390), (9, 2384260), (10, 2145834), (12, 1788195), (15, 1430556), (18, 1192130), (20, 1072917), (30, 715278), (36, 596065), (45, 476852), (60, 357639), (90, 238426), (97, 221220), (180, 119213), (194, 110610), (291, 73740), (388, 55305), (485, 44244), (582, 36870), (873, 24580), (970, 22122), (1164, 18435), (1229, 17460), (1455, 14748), (1746, 12290), (1940, 11061), (2458, 8730), (2910, 7374), (3492, 6145), (3687, 5820), (4365, 4916)]