21371569208

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{181}}^1\times {\mathrm{70619}}^1$

素因数の和:70836

約数の個数: 64

約数和(自身を含む): 46270224000

約数和(自身を除く): 24898654792

約数列:

[1, 2, 4, 8, 11, 19, 22, 38, 44, 76, 88, 152, 181, 209, 362, 418, 724, 836, 1448, 1672, 1991, 3439, 3982, 6878, 7964, 13756, 15928, 27512, 37829, 70619, 75658, 141238, 151316, 282476, 302632, 564952, 776809, 1341761, 1553618, 2683522, 3107236, 5367044, 6214472, 10734088, 12782039, 14759371, 25564078, 29518742, 51128156, 59037484, 102256312, 118074968, 140602429, 242858741, 281204858, 485717482, 562409716, 971434964, 1124819432, 1942869928, 2671446151, 5342892302, 10685784604, 21371569208]

約数ペア:

[(1, 21371569208), (2, 10685784604), (4, 5342892302), (8, 2671446151), (11, 1942869928), (19, 1124819432), (22, 971434964), (38, 562409716), (44, 485717482), (76, 281204858), (88, 242858741), (152, 140602429), (181, 118074968), (209, 102256312), (362, 59037484), (418, 51128156), (724, 29518742), (836, 25564078), (1448, 14759371), (1672, 12782039), (1991, 10734088), (3439, 6214472), (3982, 5367044), (6878, 3107236), (7964, 2683522), (13756, 1553618), (15928, 1341761), (27512, 776809), (37829, 564952), (70619, 302632), (75658, 282476), (141238, 151316)]