20521620

素因数分解:

$2^2\times 3^3\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1$

素因数の和:175

約数の個数: 192

約数和(自身を含む): 74995200

約数和(自身を除く): 54473580

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 61, 63, 70, 84, 89, 90, 105, 108, 122, 126, 135, 140, 178, 180, 183, 189, 210, 244, 252, 267, 270, 305, 315, 356, 366, 378, 420, 427, 445, 534, 540, 549, 610, 623, 630, 732, 756, 801, 854, 890, 915, 945, 1068, 1098, 1220, 1246, 1260, 1281, 1335, 1602, 1647, 1708, 1780, 1830, 1869, 1890, 2135, 2196, 2403, 2492, 2562, 2670, 2745, 3115, 3204, 3294, 3660, 3738, 3780, 3843, 4005, 4270, 4806, 5124, 5340, 5429, 5490, 5607, 6230, 6405, 6588, 7476, 7686, 8010, 8235, 8540, 9345, 9612, 10858, 10980, 11214, 11529, 12015, 12460, 12810, 15372, 16020, 16287, 16470, 16821, 18690, 19215, 21716, 22428, 23058, 24030, 25620, 27145, 28035, 32574, 32940, 33642, 37380, 38003, 38430, 46116, 48060, 48861, 54290, 56070, 57645, 65148, 67284, 76006, 76860, 81435, 84105, 97722, 108580, 112140, 114009, 115290, 146583, 152012, 162870, 168210, 190015, 195444, 228018, 230580, 244305, 293166, 325740, 336420, 342027, 380030, 456036, 488610, 570045, 586332, 684054, 732915, 760060, 977220, 1026081, 1140090, 1368108, 1465830, 1710135, 2052162, 2280180, 2931660, 3420270, 4104324, 5130405, 6840540, 10260810, 20521620]

約数ペア:

[(1, 20521620), (2, 10260810), (3, 6840540), (4, 5130405), (5, 4104324), (6, 3420270), (7, 2931660), (9, 2280180), (10, 2052162), (12, 1710135), (14, 1465830), (15, 1368108), (18, 1140090), (20, 1026081), (21, 977220), (27, 760060), (28, 732915), (30, 684054), (35, 586332), (36, 570045), (42, 488610), (45, 456036), (54, 380030), (60, 342027), (61, 336420), (63, 325740), (70, 293166), (84, 244305), (89, 230580), (90, 228018), (105, 195444), (108, 190015), (122, 168210), (126, 162870), (135, 152012), (140, 146583), (178, 115290), (180, 114009), (183, 112140), (189, 108580), (210, 97722), (244, 84105), (252, 81435), (267, 76860), (270, 76006), (305, 67284), (315, 65148), (356, 57645), (366, 56070), (378, 54290), (420, 48861), (427, 48060), (445, 46116), (534, 38430), (540, 38003), (549, 37380), (610, 33642), (623, 32940), (630, 32574), (732, 28035), (756, 27145), (801, 25620), (854, 24030), (890, 23058), (915, 22428), (945, 21716), (1068, 19215), (1098, 18690), (1220, 16821), (1246, 16470), (1260, 16287), (1281, 16020), (1335, 15372), (1602, 12810), (1647, 12460), (1708, 12015), (1780, 11529), (1830, 11214), (1869, 10980), (1890, 10858), (2135, 9612), (2196, 9345), (2403, 8540), (2492, 8235), (2562, 8010), (2670, 7686), (2745, 7476), (3115, 6588), (3204, 6405), (3294, 6230), (3660, 5607), (3738, 5490), (3780, 5429), (3843, 5340), (4005, 5124), (4270, 4806)]