25081980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1$

素因数の和:180

約数の個数: 192

約数和(自身を含む): 89994240

約数和(自身を除く): 64912260

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 11, 12, 14, 15, 20, 21, 22, 28, 30, 33, 35, 42, 44, 55, 60, 61, 66, 70, 77, 84, 89, 105, 110, 122, 132, 140, 154, 165, 178, 183, 210, 220, 231, 244, 267, 305, 308, 330, 356, 366, 385, 420, 427, 445, 462, 534, 610, 623, 660, 671, 732, 770, 854, 890, 915, 924, 979, 1068, 1155, 1220, 1246, 1281, 1335, 1342, 1540, 1708, 1780, 1830, 1869, 1958, 2013, 2135, 2310, 2492, 2562, 2670, 2684, 2937, 3115, 3355, 3660, 3738, 3916, 4026, 4270, 4620, 4697, 4895, 5124, 5340, 5429, 5874, 6230, 6405, 6710, 6853, 7476, 8052, 8540, 9345, 9394, 9790, 10065, 10858, 11748, 12460, 12810, 13420, 13706, 14091, 14685, 16287, 18690, 18788, 19580, 20130, 20559, 21716, 23485, 25620, 27145, 27412, 28182, 29370, 32574, 34265, 37380, 38003, 40260, 41118, 46970, 54290, 56364, 58740, 59719, 65148, 68530, 70455, 76006, 81435, 82236, 93940, 102795, 108580, 114009, 119438, 137060, 140910, 152012, 162870, 179157, 190015, 205590, 228018, 238876, 281820, 298595, 325740, 358314, 380030, 411180, 418033, 456036, 570045, 597190, 716628, 760060, 836066, 895785, 1140090, 1194380, 1254099, 1672132, 1791570, 2090165, 2280180, 2508198, 3583140, 4180330, 5016396, 6270495, 8360660, 12540990, 25081980]

約数ペア:

[(1, 25081980), (2, 12540990), (3, 8360660), (4, 6270495), (5, 5016396), (6, 4180330), (7, 3583140), (10, 2508198), (11, 2280180), (12, 2090165), (14, 1791570), (15, 1672132), (20, 1254099), (21, 1194380), (22, 1140090), (28, 895785), (30, 836066), (33, 760060), (35, 716628), (42, 597190), (44, 570045), (55, 456036), (60, 418033), (61, 411180), (66, 380030), (70, 358314), (77, 325740), (84, 298595), (89, 281820), (105, 238876), (110, 228018), (122, 205590), (132, 190015), (140, 179157), (154, 162870), (165, 152012), (178, 140910), (183, 137060), (210, 119438), (220, 114009), (231, 108580), (244, 102795), (267, 93940), (305, 82236), (308, 81435), (330, 76006), (356, 70455), (366, 68530), (385, 65148), (420, 59719), (427, 58740), (445, 56364), (462, 54290), (534, 46970), (610, 41118), (623, 40260), (660, 38003), (671, 37380), (732, 34265), (770, 32574), (854, 29370), (890, 28182), (915, 27412), (924, 27145), (979, 25620), (1068, 23485), (1155, 21716), (1220, 20559), (1246, 20130), (1281, 19580), (1335, 18788), (1342, 18690), (1540, 16287), (1708, 14685), (1780, 14091), (1830, 13706), (1869, 13420), (1958, 12810), (2013, 12460), (2135, 11748), (2310, 10858), (2492, 10065), (2562, 9790), (2670, 9394), (2684, 9345), (2937, 8540), (3115, 8052), (3355, 7476), (3660, 6853), (3738, 6710), (3916, 6405), (4026, 6230), (4270, 5874), (4620, 5429), (4697, 5340), (4895, 5124)]