20601540

素因数分解:

$2^2\times 3^8\times 5^1\times {\mathrm{157}}^1$

素因数の和:190

約数の個数: 108

約数和(自身を含む): 65304876

約数和(自身を除く): 44703336

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, 157, 162, 180, 243, 270, 314, 324, 405, 471, 486, 540, 628, 729, 785, 810, 942, 972, 1215, 1413, 1458, 1570, 1620, 1884, 2187, 2355, 2430, 2826, 2916, 3140, 3645, 4239, 4374, 4710, 4860, 5652, 6561, 7065, 7290, 8478, 8748, 9420, 10935, 12717, 13122, 14130, 14580, 16956, 21195, 21870, 25434, 26244, 28260, 32805, 38151, 42390, 43740, 50868, 63585, 65610, 76302, 84780, 114453, 127170, 131220, 152604, 190755, 228906, 254340, 343359, 381510, 457812, 572265, 686718, 763020, 1030077, 1144530, 1373436, 1716795, 2060154, 2289060, 3433590, 4120308, 5150385, 6867180, 10300770, 20601540]

約数ペア:

[(1, 20601540), (2, 10300770), (3, 6867180), (4, 5150385), (5, 4120308), (6, 3433590), (9, 2289060), (10, 2060154), (12, 1716795), (15, 1373436), (18, 1144530), (20, 1030077), (27, 763020), (30, 686718), (36, 572265), (45, 457812), (54, 381510), (60, 343359), (81, 254340), (90, 228906), (108, 190755), (135, 152604), (157, 131220), (162, 127170), (180, 114453), (243, 84780), (270, 76302), (314, 65610), (324, 63585), (405, 50868), (471, 43740), (486, 42390), (540, 38151), (628, 32805), (729, 28260), (785, 26244), (810, 25434), (942, 21870), (972, 21195), (1215, 16956), (1413, 14580), (1458, 14130), (1570, 13122), (1620, 12717), (1884, 10935), (2187, 9420), (2355, 8748), (2430, 8478), (2826, 7290), (2916, 7065), (3140, 6561), (3645, 5652), (4239, 4860), (4374, 4710)]