21484940

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{2179}}^1$

素因数の和:2234

約数の個数: 48

約数和(自身を含む): 49442400

約数和(自身を除く): 27957460

約数列:

[1, 2, 4, 5, 10, 17, 20, 29, 34, 58, 68, 85, 116, 145, 170, 290, 340, 493, 580, 986, 1972, 2179, 2465, 4358, 4930, 8716, 9860, 10895, 21790, 37043, 43580, 63191, 74086, 126382, 148172, 185215, 252764, 315955, 370430, 631910, 740860, 1074247, 1263820, 2148494, 4296988, 5371235, 10742470, 21484940]

約数ペア:

[(1, 21484940), (2, 10742470), (4, 5371235), (5, 4296988), (10, 2148494), (17, 1263820), (20, 1074247), (29, 740860), (34, 631910), (58, 370430), (68, 315955), (85, 252764), (116, 185215), (145, 148172), (170, 126382), (290, 74086), (340, 63191), (493, 43580), (580, 37043), (986, 21790), (1972, 10895), (2179, 9860), (2465, 8716), (4358, 4930)]