20713860

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{431}}^1$

素因数の和:538

約数の個数: 96

約数和(自身を含む): 65318400

約数和(自身を除く): 44604540

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 89, 90, 108, 135, 178, 180, 267, 270, 356, 431, 445, 534, 540, 801, 862, 890, 1068, 1293, 1335, 1602, 1724, 1780, 2155, 2403, 2586, 2670, 3204, 3879, 4005, 4310, 4806, 5172, 5340, 6465, 7758, 8010, 8620, 9612, 11637, 12015, 12930, 15516, 16020, 19395, 23274, 24030, 25860, 38359, 38790, 46548, 48060, 58185, 76718, 77580, 115077, 116370, 153436, 191795, 230154, 232740, 345231, 383590, 460308, 575385, 690462, 767180, 1035693, 1150770, 1380924, 1726155, 2071386, 2301540, 3452310, 4142772, 5178465, 6904620, 10356930, 20713860]

約数ペア:

[(1, 20713860), (2, 10356930), (3, 6904620), (4, 5178465), (5, 4142772), (6, 3452310), (9, 2301540), (10, 2071386), (12, 1726155), (15, 1380924), (18, 1150770), (20, 1035693), (27, 767180), (30, 690462), (36, 575385), (45, 460308), (54, 383590), (60, 345231), (89, 232740), (90, 230154), (108, 191795), (135, 153436), (178, 116370), (180, 115077), (267, 77580), (270, 76718), (356, 58185), (431, 48060), (445, 46548), (534, 38790), (540, 38359), (801, 25860), (862, 24030), (890, 23274), (1068, 19395), (1293, 16020), (1335, 15516), (1602, 12930), (1724, 12015), (1780, 11637), (2155, 9612), (2403, 8620), (2586, 8010), (2670, 7758), (3204, 6465), (3879, 5340), (4005, 5172), (4310, 4806)]