21217020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1$

素因数の和:132

約数の個数: 192

約数和(自身を含む): 71995392

約数和(自身を除く): 50778372

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 17, 20, 22, 30, 31, 33, 34, 44, 51, 55, 60, 61, 62, 66, 68, 85, 93, 102, 110, 122, 124, 132, 155, 165, 170, 183, 186, 187, 204, 220, 244, 255, 305, 310, 330, 340, 341, 366, 372, 374, 465, 510, 527, 561, 610, 620, 660, 671, 682, 732, 748, 915, 930, 935, 1020, 1023, 1037, 1054, 1122, 1220, 1342, 1364, 1581, 1705, 1830, 1860, 1870, 1891, 2013, 2046, 2074, 2108, 2244, 2635, 2684, 2805, 3111, 3162, 3355, 3410, 3660, 3740, 3782, 4026, 4092, 4148, 5115, 5185, 5270, 5610, 5673, 5797, 6222, 6324, 6710, 6820, 7564, 7905, 8052, 9455, 10065, 10230, 10370, 10540, 11220, 11346, 11407, 11594, 12444, 13420, 15555, 15810, 17391, 18910, 20130, 20460, 20740, 20801, 22692, 22814, 23188, 28365, 28985, 31110, 31620, 32147, 34221, 34782, 37820, 40260, 41602, 45628, 56730, 57035, 57970, 62220, 62403, 64294, 68442, 69564, 83204, 86955, 96441, 104005, 113460, 114070, 115940, 124806, 128588, 136884, 160735, 171105, 173910, 192882, 208010, 228140, 249612, 312015, 321470, 342210, 347820, 353617, 385764, 416020, 482205, 624030, 642940, 684420, 707234, 964410, 1060851, 1248060, 1414468, 1768085, 1928820, 2121702, 3536170, 4243404, 5304255, 7072340, 10608510, 21217020]

約数ペア:

[(1, 21217020), (2, 10608510), (3, 7072340), (4, 5304255), (5, 4243404), (6, 3536170), (10, 2121702), (11, 1928820), (12, 1768085), (15, 1414468), (17, 1248060), (20, 1060851), (22, 964410), (30, 707234), (31, 684420), (33, 642940), (34, 624030), (44, 482205), (51, 416020), (55, 385764), (60, 353617), (61, 347820), (62, 342210), (66, 321470), (68, 312015), (85, 249612), (93, 228140), (102, 208010), (110, 192882), (122, 173910), (124, 171105), (132, 160735), (155, 136884), (165, 128588), (170, 124806), (183, 115940), (186, 114070), (187, 113460), (204, 104005), (220, 96441), (244, 86955), (255, 83204), (305, 69564), (310, 68442), (330, 64294), (340, 62403), (341, 62220), (366, 57970), (372, 57035), (374, 56730), (465, 45628), (510, 41602), (527, 40260), (561, 37820), (610, 34782), (620, 34221), (660, 32147), (671, 31620), (682, 31110), (732, 28985), (748, 28365), (915, 23188), (930, 22814), (935, 22692), (1020, 20801), (1023, 20740), (1037, 20460), (1054, 20130), (1122, 18910), (1220, 17391), (1342, 15810), (1364, 15555), (1581, 13420), (1705, 12444), (1830, 11594), (1860, 11407), (1870, 11346), (1891, 11220), (2013, 10540), (2046, 10370), (2074, 10230), (2108, 10065), (2244, 9455), (2635, 8052), (2684, 7905), (2805, 7564), (3111, 6820), (3162, 6710), (3355, 6324), (3410, 6222), (3660, 5797), (3740, 5673), (3782, 5610), (4026, 5270), (4092, 5185), (4148, 5115)]