28658420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{277}}^1\times {\mathrm{739}}^1$

素因数の和:1032

約数の個数: 48

約数和(自身を含む): 69121920

約数和(自身を除く): 40463500

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 277, 554, 739, 1108, 1385, 1478, 1939, 2770, 2956, 3695, 3878, 5173, 5540, 7390, 7756, 9695, 10346, 14780, 19390, 20692, 25865, 38780, 51730, 103460, 204703, 409406, 818812, 1023515, 1432921, 2047030, 2865842, 4094060, 5731684, 7164605, 14329210, 28658420]

約数ペア:

[(1, 28658420), (2, 14329210), (4, 7164605), (5, 5731684), (7, 4094060), (10, 2865842), (14, 2047030), (20, 1432921), (28, 1023515), (35, 818812), (70, 409406), (140, 204703), (277, 103460), (554, 51730), (739, 38780), (1108, 25865), (1385, 20692), (1478, 19390), (1939, 14780), (2770, 10346), (2956, 9695), (3695, 7756), (3878, 7390), (5173, 5540)]