28038920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{7703}}^1$

素因数の和:7734

約数の個数: 64

約数和(自身を含む): 77656320

約数和(自身を除く): 49617400

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 364, 455, 520, 728, 910, 1820, 3640, 7703, 15406, 30812, 38515, 53921, 61624, 77030, 100139, 107842, 154060, 200278, 215684, 269605, 308120, 400556, 431368, 500695, 539210, 700973, 801112, 1001390, 1078420, 1401946, 2002780, 2156840, 2803892, 3504865, 4005560, 5607784, 7009730, 14019460, 28038920]

約数ペア:

[(1, 28038920), (2, 14019460), (4, 7009730), (5, 5607784), (7, 4005560), (8, 3504865), (10, 2803892), (13, 2156840), (14, 2002780), (20, 1401946), (26, 1078420), (28, 1001390), (35, 801112), (40, 700973), (52, 539210), (56, 500695), (65, 431368), (70, 400556), (91, 308120), (104, 269605), (130, 215684), (140, 200278), (182, 154060), (260, 107842), (280, 100139), (364, 77030), (455, 61624), (520, 53921), (728, 38515), (910, 30812), (1820, 15406), (3640, 7703)]