16940420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{5261}}^1$

素因数の和:5300

約数の個数: 48

約数和(自身を含む): 42432768

約数和(自身を除く): 25492348

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 70, 92, 115, 140, 161, 230, 322, 460, 644, 805, 1610, 3220, 5261, 10522, 21044, 26305, 36827, 52610, 73654, 105220, 121003, 147308, 184135, 242006, 368270, 484012, 605015, 736540, 847021, 1210030, 1694042, 2420060, 3388084, 4235105, 8470210, 16940420]

約数ペア:

[(1, 16940420), (2, 8470210), (4, 4235105), (5, 3388084), (7, 2420060), (10, 1694042), (14, 1210030), (20, 847021), (23, 736540), (28, 605015), (35, 484012), (46, 368270), (70, 242006), (92, 184135), (115, 147308), (140, 121003), (161, 105220), (230, 73654), (322, 52610), (460, 36827), (644, 26305), (805, 21044), (1610, 10522), (3220, 5261)]