21371508

素因数分解:

$2^2\times 3^2\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{487}}^1$

素因数の和:573

約数の個数: 72

約数和(自身を含む): 57552768

約数和(自身を除く): 36181260

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 23, 36, 46, 53, 69, 92, 106, 138, 159, 207, 212, 276, 318, 414, 477, 487, 636, 828, 954, 974, 1219, 1461, 1908, 1948, 2438, 2922, 3657, 4383, 4876, 5844, 7314, 8766, 10971, 11201, 14628, 17532, 21942, 22402, 25811, 33603, 43884, 44804, 51622, 67206, 77433, 100809, 103244, 134412, 154866, 201618, 232299, 309732, 403236, 464598, 593653, 929196, 1187306, 1780959, 2374612, 3561918, 5342877, 7123836, 10685754, 21371508]

約数ペア:

[(1, 21371508), (2, 10685754), (3, 7123836), (4, 5342877), (6, 3561918), (9, 2374612), (12, 1780959), (18, 1187306), (23, 929196), (36, 593653), (46, 464598), (53, 403236), (69, 309732), (92, 232299), (106, 201618), (138, 154866), (159, 134412), (207, 103244), (212, 100809), (276, 77433), (318, 67206), (414, 51622), (477, 44804), (487, 43884), (636, 33603), (828, 25811), (954, 22402), (974, 21942), (1219, 17532), (1461, 14628), (1908, 11201), (1948, 10971), (2438, 8766), (2922, 7314), (3657, 5844), (4383, 4876)]