18742920

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{421}}^1$

素因数の和:495

約数の個数: 128

約数和(自身を含む): 65629440

約数和(自身を除く): 46886520

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 53, 56, 60, 70, 84, 105, 106, 120, 140, 159, 168, 210, 212, 265, 280, 318, 371, 420, 421, 424, 530, 636, 742, 795, 840, 842, 1060, 1113, 1263, 1272, 1484, 1590, 1684, 1855, 2105, 2120, 2226, 2526, 2947, 2968, 3180, 3368, 3710, 4210, 4452, 5052, 5565, 5894, 6315, 6360, 7420, 8420, 8841, 8904, 10104, 11130, 11788, 12630, 14735, 14840, 16840, 17682, 22260, 22313, 23576, 25260, 29470, 35364, 44205, 44520, 44626, 50520, 58940, 66939, 70728, 88410, 89252, 111565, 117880, 133878, 156191, 176820, 178504, 223130, 267756, 312382, 334695, 353640, 446260, 468573, 535512, 624764, 669390, 780955, 892520, 937146, 1249528, 1338780, 1561910, 1874292, 2342865, 2677560, 3123820, 3748584, 4685730, 6247640, 9371460, 18742920]

約数ペア:

[(1, 18742920), (2, 9371460), (3, 6247640), (4, 4685730), (5, 3748584), (6, 3123820), (7, 2677560), (8, 2342865), (10, 1874292), (12, 1561910), (14, 1338780), (15, 1249528), (20, 937146), (21, 892520), (24, 780955), (28, 669390), (30, 624764), (35, 535512), (40, 468573), (42, 446260), (53, 353640), (56, 334695), (60, 312382), (70, 267756), (84, 223130), (105, 178504), (106, 176820), (120, 156191), (140, 133878), (159, 117880), (168, 111565), (210, 89252), (212, 88410), (265, 70728), (280, 66939), (318, 58940), (371, 50520), (420, 44626), (421, 44520), (424, 44205), (530, 35364), (636, 29470), (742, 25260), (795, 23576), (840, 22313), (842, 22260), (1060, 17682), (1113, 16840), (1263, 14840), (1272, 14735), (1484, 12630), (1590, 11788), (1684, 11130), (1855, 10104), (2105, 8904), (2120, 8841), (2226, 8420), (2526, 7420), (2947, 6360), (2968, 6315), (3180, 5894), (3368, 5565), (3710, 5052), (4210, 4452)]