254540

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1$

素因数の和:122

約数の個数: 48

約数和(自身を含む): 635040

約数和(自身を除く): 380500

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 89, 110, 130, 143, 178, 220, 260, 286, 356, 445, 572, 715, 890, 979, 1157, 1430, 1780, 1958, 2314, 2860, 3916, 4628, 4895, 5785, 9790, 11570, 12727, 19580, 23140, 25454, 50908, 63635, 127270, 254540]

約数ペア:

[(1, 254540), (2, 127270), (4, 63635), (5, 50908), (10, 25454), (11, 23140), (13, 19580), (20, 12727), (22, 11570), (26, 9790), (44, 5785), (52, 4895), (55, 4628), (65, 3916), (89, 2860), (110, 2314), (130, 1958), (143, 1780), (178, 1430), (220, 1157), (260, 979), (286, 890), (356, 715), (445, 572)]