219870020

素因数分解:

$2^2\times 5^1\times {\mathrm{107}}^1\times {\mathrm{127}}^1\times {\mathrm{809}}^1$

素因数の和:1052

約数の個数: 48

約数和(自身を含む): 470292480

約数和(自身を除く): 250422460

約数列:

[1, 2, 4, 5, 10, 20, 107, 127, 214, 254, 428, 508, 535, 635, 809, 1070, 1270, 1618, 2140, 2540, 3236, 4045, 8090, 13589, 16180, 27178, 54356, 67945, 86563, 102743, 135890, 173126, 205486, 271780, 346252, 410972, 432815, 513715, 865630, 1027430, 1731260, 2054860, 10993501, 21987002, 43974004, 54967505, 109935010, 219870020]

約数ペア:

[(1, 219870020), (2, 109935010), (4, 54967505), (5, 43974004), (10, 21987002), (20, 10993501), (107, 2054860), (127, 1731260), (214, 1027430), (254, 865630), (428, 513715), (508, 432815), (535, 410972), (635, 346252), (809, 271780), (1070, 205486), (1270, 173126), (1618, 135890), (2140, 102743), (2540, 86563), (3236, 67945), (4045, 54356), (8090, 27178), (13589, 16180)]