21665340

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{757}}^1$

素因数の和:828

約数の個数: 96

約数和(自身を含む): 68765760

約数和(自身を除く): 47100420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 53, 54, 60, 90, 106, 108, 135, 159, 180, 212, 265, 270, 318, 477, 530, 540, 636, 757, 795, 954, 1060, 1431, 1514, 1590, 1908, 2271, 2385, 2862, 3028, 3180, 3785, 4542, 4770, 5724, 6813, 7155, 7570, 9084, 9540, 11355, 13626, 14310, 15140, 20439, 22710, 27252, 28620, 34065, 40121, 40878, 45420, 68130, 80242, 81756, 102195, 120363, 136260, 160484, 200605, 204390, 240726, 361089, 401210, 408780, 481452, 601815, 722178, 802420, 1083267, 1203630, 1444356, 1805445, 2166534, 2407260, 3610890, 4333068, 5416335, 7221780, 10832670, 21665340]

約数ペア:

[(1, 21665340), (2, 10832670), (3, 7221780), (4, 5416335), (5, 4333068), (6, 3610890), (9, 2407260), (10, 2166534), (12, 1805445), (15, 1444356), (18, 1203630), (20, 1083267), (27, 802420), (30, 722178), (36, 601815), (45, 481452), (53, 408780), (54, 401210), (60, 361089), (90, 240726), (106, 204390), (108, 200605), (135, 160484), (159, 136260), (180, 120363), (212, 102195), (265, 81756), (270, 80242), (318, 68130), (477, 45420), (530, 40878), (540, 40121), (636, 34065), (757, 28620), (795, 27252), (954, 22710), (1060, 20439), (1431, 15140), (1514, 14310), (1590, 13626), (1908, 11355), (2271, 9540), (2385, 9084), (2862, 7570), (3028, 7155), (3180, 6813), (3785, 5724), (4542, 4770)]