781662020

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{353}}^1\times {\mathrm{2089}}^1$

素因数の和:2504

約数の個数: 48

約数和(自身を含む): 1678002480

約数和(自身を除く): 896340460

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 212, 265, 353, 530, 706, 1060, 1412, 1765, 2089, 3530, 4178, 7060, 8356, 10445, 18709, 20890, 37418, 41780, 74836, 93545, 110717, 187090, 221434, 374180, 442868, 553585, 737417, 1107170, 1474834, 2214340, 2949668, 3687085, 7374170, 14748340, 39083101, 78166202, 156332404, 195415505, 390831010, 781662020]

約数ペア:

[(1, 781662020), (2, 390831010), (4, 195415505), (5, 156332404), (10, 78166202), (20, 39083101), (53, 14748340), (106, 7374170), (212, 3687085), (265, 2949668), (353, 2214340), (530, 1474834), (706, 1107170), (1060, 737417), (1412, 553585), (1765, 442868), (2089, 374180), (3530, 221434), (4178, 187090), (7060, 110717), (8356, 93545), (10445, 74836), (18709, 41780), (20890, 37418)]