20256210

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{199}}^1$

素因数の和:257

約数の個数: 128

約数和(自身を含む): 60480000

約数和(自身を除く): 40223790

約数列:

[1, 2, 3, 5, 6, 9, 10, 13, 15, 18, 26, 27, 29, 30, 39, 45, 54, 58, 65, 78, 87, 90, 117, 130, 135, 145, 174, 195, 199, 234, 261, 270, 290, 351, 377, 390, 398, 435, 522, 585, 597, 702, 754, 783, 870, 995, 1131, 1170, 1194, 1305, 1566, 1755, 1791, 1885, 1990, 2262, 2587, 2610, 2985, 3393, 3510, 3582, 3770, 3915, 5174, 5373, 5655, 5771, 5970, 6786, 7761, 7830, 8955, 10179, 10746, 11310, 11542, 12935, 15522, 16965, 17313, 17910, 20358, 23283, 25870, 26865, 28855, 33930, 34626, 38805, 46566, 50895, 51939, 53730, 57710, 69849, 75023, 77610, 86565, 101790, 103878, 116415, 139698, 150046, 155817, 173130, 225069, 232830, 259695, 311634, 349245, 375115, 450138, 519390, 675207, 698490, 750230, 779085, 1125345, 1350414, 1558170, 2025621, 2250690, 3376035, 4051242, 6752070, 10128105, 20256210]

約数ペア:

[(1, 20256210), (2, 10128105), (3, 6752070), (5, 4051242), (6, 3376035), (9, 2250690), (10, 2025621), (13, 1558170), (15, 1350414), (18, 1125345), (26, 779085), (27, 750230), (29, 698490), (30, 675207), (39, 519390), (45, 450138), (54, 375115), (58, 349245), (65, 311634), (78, 259695), (87, 232830), (90, 225069), (117, 173130), (130, 155817), (135, 150046), (145, 139698), (174, 116415), (195, 103878), (199, 101790), (234, 86565), (261, 77610), (270, 75023), (290, 69849), (351, 57710), (377, 53730), (390, 51939), (398, 50895), (435, 46566), (522, 38805), (585, 34626), (597, 33930), (702, 28855), (754, 26865), (783, 25870), (870, 23283), (995, 20358), (1131, 17910), (1170, 17313), (1194, 16965), (1305, 15522), (1566, 12935), (1755, 11542), (1791, 11310), (1885, 10746), (1990, 10179), (2262, 8955), (2587, 7830), (2610, 7761), (2985, 6786), (3393, 5970), (3510, 5771), (3582, 5655), (3770, 5373), (3915, 5174)]