20304460

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1$

素因数の和:187

約数の個数: 96

約数和(自身を含む): 50621760

約数和(自身を除く): 30317300

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 34, 44, 55, 61, 68, 85, 89, 110, 122, 170, 178, 187, 220, 244, 305, 340, 356, 374, 445, 610, 671, 748, 890, 935, 979, 1037, 1220, 1342, 1513, 1780, 1870, 1958, 2074, 2684, 3026, 3355, 3740, 3916, 4148, 4895, 5185, 5429, 6052, 6710, 7565, 9790, 10370, 10858, 11407, 13420, 15130, 16643, 19580, 20740, 21716, 22814, 27145, 30260, 33286, 45628, 54290, 57035, 59719, 66572, 83215, 92293, 108580, 114070, 119438, 166430, 184586, 228140, 238876, 298595, 332860, 369172, 461465, 597190, 922930, 1015223, 1194380, 1845860, 2030446, 4060892, 5076115, 10152230, 20304460]

約数ペア:

[(1, 20304460), (2, 10152230), (4, 5076115), (5, 4060892), (10, 2030446), (11, 1845860), (17, 1194380), (20, 1015223), (22, 922930), (34, 597190), (44, 461465), (55, 369172), (61, 332860), (68, 298595), (85, 238876), (89, 228140), (110, 184586), (122, 166430), (170, 119438), (178, 114070), (187, 108580), (220, 92293), (244, 83215), (305, 66572), (340, 59719), (356, 57035), (374, 54290), (445, 45628), (610, 33286), (671, 30260), (748, 27145), (890, 22814), (935, 21716), (979, 20740), (1037, 19580), (1220, 16643), (1342, 15130), (1513, 13420), (1780, 11407), (1870, 10858), (1958, 10370), (2074, 9790), (2684, 7565), (3026, 6710), (3355, 6052), (3740, 5429), (3916, 5185), (4148, 4895)]