21305004

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{1907}}^1$

素因数の和:1947

約数の個数: 72

約数和(自身を含む): 60903360

約数和(自身を除く): 39598356

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 19, 21, 28, 38, 42, 49, 57, 76, 84, 98, 114, 133, 147, 196, 228, 266, 294, 399, 532, 588, 798, 931, 1596, 1862, 1907, 2793, 3724, 3814, 5586, 5721, 7628, 11172, 11442, 13349, 22884, 26698, 36233, 40047, 53396, 72466, 80094, 93443, 108699, 144932, 160188, 186886, 217398, 253631, 280329, 373772, 434796, 507262, 560658, 760893, 1014524, 1121316, 1521786, 1775417, 3043572, 3550834, 5326251, 7101668, 10652502, 21305004]

約数ペア:

[(1, 21305004), (2, 10652502), (3, 7101668), (4, 5326251), (6, 3550834), (7, 3043572), (12, 1775417), (14, 1521786), (19, 1121316), (21, 1014524), (28, 760893), (38, 560658), (42, 507262), (49, 434796), (57, 373772), (76, 280329), (84, 253631), (98, 217398), (114, 186886), (133, 160188), (147, 144932), (196, 108699), (228, 93443), (266, 80094), (294, 72466), (399, 53396), (532, 40047), (588, 36233), (798, 26698), (931, 22884), (1596, 13349), (1862, 11442), (1907, 11172), (2793, 7628), (3724, 5721), (3814, 5586)]