28313380

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{127}}^1\times {\mathrm{157}}^1$

素因数の和:364

約数の個数: 48

約数和(自身を含む): 61157376

約数和(自身を除く): 32843996

約数列:

[1, 2, 4, 5, 10, 20, 71, 127, 142, 157, 254, 284, 314, 355, 508, 628, 635, 710, 785, 1270, 1420, 1570, 2540, 3140, 9017, 11147, 18034, 19939, 22294, 36068, 39878, 44588, 45085, 55735, 79756, 90170, 99695, 111470, 180340, 199390, 222940, 398780, 1415669, 2831338, 5662676, 7078345, 14156690, 28313380]

約数ペア:

[(1, 28313380), (2, 14156690), (4, 7078345), (5, 5662676), (10, 2831338), (20, 1415669), (71, 398780), (127, 222940), (142, 199390), (157, 180340), (254, 111470), (284, 99695), (314, 90170), (355, 79756), (508, 55735), (628, 45085), (635, 44588), (710, 39878), (785, 36068), (1270, 22294), (1420, 19939), (1570, 18034), (2540, 11147), (3140, 9017)]