21709620

素因数分解:

$2^2\times 3^6\times 5^1\times {\mathrm{1489}}^1$

素因数の和:1516

約数の個数: 84

約数和(自身を含む): 68399940

約数和(自身を除く): 46690320

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 243, 270, 324, 405, 486, 540, 729, 810, 972, 1215, 1458, 1489, 1620, 2430, 2916, 2978, 3645, 4467, 4860, 5956, 7290, 7445, 8934, 13401, 14580, 14890, 17868, 22335, 26802, 29780, 40203, 44670, 53604, 67005, 80406, 89340, 120609, 134010, 160812, 201015, 241218, 268020, 361827, 402030, 482436, 603045, 723654, 804060, 1085481, 1206090, 1447308, 1809135, 2170962, 2412180, 3618270, 4341924, 5427405, 7236540, 10854810, 21709620]

約数ペア:

[(1, 21709620), (2, 10854810), (3, 7236540), (4, 5427405), (5, 4341924), (6, 3618270), (9, 2412180), (10, 2170962), (12, 1809135), (15, 1447308), (18, 1206090), (20, 1085481), (27, 804060), (30, 723654), (36, 603045), (45, 482436), (54, 402030), (60, 361827), (81, 268020), (90, 241218), (108, 201015), (135, 160812), (162, 134010), (180, 120609), (243, 89340), (270, 80406), (324, 67005), (405, 53604), (486, 44670), (540, 40203), (729, 29780), (810, 26802), (972, 22335), (1215, 17868), (1458, 14890), (1489, 14580), (1620, 13401), (2430, 8934), (2916, 7445), (2978, 7290), (3645, 5956), (4467, 4860)]