81890340

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{194977}}^1$

素因数の和:194996

約数の個数: 48

約数和(自身を含む): 262050432

約数和(自身を除く): 180160092

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 194977, 389954, 584931, 779908, 974885, 1169862, 1364839, 1949770, 2339724, 2729678, 2924655, 3899540, 4094517, 5459356, 5849310, 6824195, 8189034, 11698620, 13648390, 16378068, 20472585, 27296780, 40945170, 81890340]

約数ペア:

[(1, 81890340), (2, 40945170), (3, 27296780), (4, 20472585), (5, 16378068), (6, 13648390), (7, 11698620), (10, 8189034), (12, 6824195), (14, 5849310), (15, 5459356), (20, 4094517), (21, 3899540), (28, 2924655), (30, 2729678), (35, 2339724), (42, 1949770), (60, 1364839), (70, 1169862), (84, 974885), (105, 779908), (140, 584931), (210, 389954), (420, 194977)]