18887580

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{131}}^1$

素因数の和:241

約数の個数: 120

約数和(自身を含む): 60374160

約数和(自身を除く): 41486580

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 89, 90, 108, 131, 135, 162, 178, 180, 262, 267, 270, 324, 356, 393, 405, 445, 524, 534, 540, 655, 786, 801, 810, 890, 1068, 1179, 1310, 1335, 1572, 1602, 1620, 1780, 1965, 2358, 2403, 2620, 2670, 3204, 3537, 3930, 4005, 4716, 4806, 5340, 5895, 7074, 7209, 7860, 8010, 9612, 10611, 11659, 11790, 12015, 14148, 14418, 16020, 17685, 21222, 23318, 23580, 24030, 28836, 34977, 35370, 36045, 42444, 46636, 48060, 53055, 58295, 69954, 70740, 72090, 104931, 106110, 116590, 139908, 144180, 174885, 209862, 212220, 233180, 314793, 349770, 419724, 524655, 629586, 699540, 944379, 1049310, 1259172, 1573965, 1888758, 2098620, 3147930, 3777516, 4721895, 6295860, 9443790, 18887580]

約数ペア:

[(1, 18887580), (2, 9443790), (3, 6295860), (4, 4721895), (5, 3777516), (6, 3147930), (9, 2098620), (10, 1888758), (12, 1573965), (15, 1259172), (18, 1049310), (20, 944379), (27, 699540), (30, 629586), (36, 524655), (45, 419724), (54, 349770), (60, 314793), (81, 233180), (89, 212220), (90, 209862), (108, 174885), (131, 144180), (135, 139908), (162, 116590), (178, 106110), (180, 104931), (262, 72090), (267, 70740), (270, 69954), (324, 58295), (356, 53055), (393, 48060), (405, 46636), (445, 42444), (524, 36045), (534, 35370), (540, 34977), (655, 28836), (786, 24030), (801, 23580), (810, 23318), (890, 21222), (1068, 17685), (1179, 16020), (1310, 14418), (1335, 14148), (1572, 12015), (1602, 11790), (1620, 11659), (1780, 10611), (1965, 9612), (2358, 8010), (2403, 7860), (2620, 7209), (2670, 7074), (3204, 5895), (3537, 5340), (3930, 4806), (4005, 4716)]