21199288

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{409}}^1$

素因数の和:476

約数の個数: 64

約数和(自身を含む): 47232000

約数和(自身を除く): 26032712

約数列:

[1, 2, 4, 8, 11, 19, 22, 31, 38, 44, 62, 76, 88, 124, 152, 209, 248, 341, 409, 418, 589, 682, 818, 836, 1178, 1364, 1636, 1672, 2356, 2728, 3272, 4499, 4712, 6479, 7771, 8998, 12679, 12958, 15542, 17996, 25358, 25916, 31084, 35992, 50716, 51832, 62168, 85481, 101432, 139469, 170962, 240901, 278938, 341924, 481802, 557876, 683848, 963604, 1115752, 1927208, 2649911, 5299822, 10599644, 21199288]

約数ペア:

[(1, 21199288), (2, 10599644), (4, 5299822), (8, 2649911), (11, 1927208), (19, 1115752), (22, 963604), (31, 683848), (38, 557876), (44, 481802), (62, 341924), (76, 278938), (88, 240901), (124, 170962), (152, 139469), (209, 101432), (248, 85481), (341, 62168), (409, 51832), (418, 50716), (589, 35992), (682, 31084), (818, 25916), (836, 25358), (1178, 17996), (1364, 15542), (1636, 12958), (1672, 12679), (2356, 8998), (2728, 7771), (3272, 6479), (4499, 4712)]