19907244

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{197}}^1\times {\mathrm{401}}^1$

素因数の和:615

約数の個数: 72

約数和(自身を含む): 57945888

約数和(自身を除く): 38038644

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 197, 252, 394, 401, 591, 788, 802, 1182, 1203, 1379, 1604, 1773, 2364, 2406, 2758, 2807, 3546, 3609, 4137, 4812, 5516, 5614, 7092, 7218, 8274, 8421, 11228, 12411, 14436, 16548, 16842, 24822, 25263, 33684, 49644, 50526, 78997, 101052, 157994, 236991, 315988, 473982, 552979, 710973, 947964, 1105958, 1421946, 1658937, 2211916, 2843892, 3317874, 4976811, 6635748, 9953622, 19907244]

約数ペア:

[(1, 19907244), (2, 9953622), (3, 6635748), (4, 4976811), (6, 3317874), (7, 2843892), (9, 2211916), (12, 1658937), (14, 1421946), (18, 1105958), (21, 947964), (28, 710973), (36, 552979), (42, 473982), (63, 315988), (84, 236991), (126, 157994), (197, 101052), (252, 78997), (394, 50526), (401, 49644), (591, 33684), (788, 25263), (802, 24822), (1182, 16842), (1203, 16548), (1379, 14436), (1604, 12411), (1773, 11228), (2364, 8421), (2406, 8274), (2758, 7218), (2807, 7092), (3546, 5614), (3609, 5516), (4137, 4812)]