21698380

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{179}}^1$

素因数の和:247

約数の個数: 96

約数和(自身を含む): 54432000

約数和(自身を除く): 32733620

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 29, 38, 44, 55, 58, 76, 95, 110, 116, 145, 179, 190, 209, 220, 290, 319, 358, 380, 418, 551, 580, 638, 716, 836, 895, 1045, 1102, 1276, 1595, 1790, 1969, 2090, 2204, 2755, 3190, 3401, 3580, 3938, 4180, 5191, 5510, 6061, 6380, 6802, 7876, 9845, 10382, 11020, 12122, 13604, 17005, 19690, 20764, 24244, 25955, 30305, 34010, 37411, 39380, 51910, 57101, 60610, 68020, 74822, 98629, 103820, 114202, 121220, 149644, 187055, 197258, 228404, 285505, 374110, 394516, 493145, 571010, 748220, 986290, 1084919, 1142020, 1972580, 2169838, 4339676, 5424595, 10849190, 21698380]

約数ペア:

[(1, 21698380), (2, 10849190), (4, 5424595), (5, 4339676), (10, 2169838), (11, 1972580), (19, 1142020), (20, 1084919), (22, 986290), (29, 748220), (38, 571010), (44, 493145), (55, 394516), (58, 374110), (76, 285505), (95, 228404), (110, 197258), (116, 187055), (145, 149644), (179, 121220), (190, 114202), (209, 103820), (220, 98629), (290, 74822), (319, 68020), (358, 60610), (380, 57101), (418, 51910), (551, 39380), (580, 37411), (638, 34010), (716, 30305), (836, 25955), (895, 24244), (1045, 20764), (1102, 19690), (1276, 17005), (1595, 13604), (1790, 12122), (1969, 11020), (2090, 10382), (2204, 9845), (2755, 7876), (3190, 6802), (3401, 6380), (3580, 6061), (3938, 5510), (4180, 5191)]