20878380

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{6823}}^1$

素因数の和:6855

約数の個数: 72

約数和(自身を含む): 67066272

約数和(自身を除く): 46187892

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 30, 34, 36, 45, 51, 60, 68, 85, 90, 102, 153, 170, 180, 204, 255, 306, 340, 510, 612, 765, 1020, 1530, 3060, 6823, 13646, 20469, 27292, 34115, 40938, 61407, 68230, 81876, 102345, 115991, 122814, 136460, 204690, 231982, 245628, 307035, 347973, 409380, 463964, 579955, 614070, 695946, 1043919, 1159910, 1228140, 1391892, 1739865, 2087838, 2319820, 3479730, 4175676, 5219595, 6959460, 10439190, 20878380]

約数ペア:

[(1, 20878380), (2, 10439190), (3, 6959460), (4, 5219595), (5, 4175676), (6, 3479730), (9, 2319820), (10, 2087838), (12, 1739865), (15, 1391892), (17, 1228140), (18, 1159910), (20, 1043919), (30, 695946), (34, 614070), (36, 579955), (45, 463964), (51, 409380), (60, 347973), (68, 307035), (85, 245628), (90, 231982), (102, 204690), (153, 136460), (170, 122814), (180, 115991), (204, 102345), (255, 81876), (306, 68230), (340, 61407), (510, 40938), (612, 34115), (765, 27292), (1020, 20469), (1530, 13646), (3060, 6823)]