21107988

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{151}}^1\times {\mathrm{353}}^1$

素因数の和:525

約数の個数: 72

約数和(自身を含む): 58758336

約数和(自身を除く): 37650348

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 33, 36, 44, 66, 99, 132, 151, 198, 302, 353, 396, 453, 604, 706, 906, 1059, 1359, 1412, 1661, 1812, 2118, 2718, 3177, 3322, 3883, 4236, 4983, 5436, 6354, 6644, 7766, 9966, 11649, 12708, 14949, 15532, 19932, 23298, 29898, 34947, 46596, 53303, 59796, 69894, 106606, 139788, 159909, 213212, 319818, 479727, 586333, 639636, 959454, 1172666, 1758999, 1918908, 2345332, 3517998, 5276997, 7035996, 10553994, 21107988]

約数ペア:

[(1, 21107988), (2, 10553994), (3, 7035996), (4, 5276997), (6, 3517998), (9, 2345332), (11, 1918908), (12, 1758999), (18, 1172666), (22, 959454), (33, 639636), (36, 586333), (44, 479727), (66, 319818), (99, 213212), (132, 159909), (151, 139788), (198, 106606), (302, 69894), (353, 59796), (396, 53303), (453, 46596), (604, 34947), (706, 29898), (906, 23298), (1059, 19932), (1359, 15532), (1412, 14949), (1661, 12708), (1812, 11649), (2118, 9966), (2718, 7766), (3177, 6644), (3322, 6354), (3883, 5436), (4236, 4983)]