21000421422

素因数分解:

$2^1\times 3^4\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{43457}}^1$

素因数の和:43647

約数の個数: 80

約数和(自身を含む): 49849802640

約数和(自身を除く): 28849381218

約数列:

[1, 2, 3, 6, 9, 18, 19, 27, 38, 54, 57, 81, 114, 157, 162, 171, 314, 342, 471, 513, 942, 1026, 1413, 1539, 2826, 2983, 3078, 4239, 5966, 8478, 8949, 12717, 17898, 25434, 26847, 43457, 53694, 80541, 86914, 130371, 161082, 241623, 260742, 391113, 483246, 782226, 825683, 1173339, 1651366, 2346678, 2477049, 3520017, 4954098, 6822749, 7040034, 7431147, 13645498, 14862294, 20468247, 22293441, 40936494, 44586882, 61404741, 66880323, 122809482, 129632231, 133760646, 184214223, 259264462, 368428446, 388896693, 552642669, 777793386, 1105285338, 1166690079, 2333380158, 3500070237, 7000140474, 10500210711, 21000421422]

約数ペア:

[(1, 21000421422), (2, 10500210711), (3, 7000140474), (6, 3500070237), (9, 2333380158), (18, 1166690079), (19, 1105285338), (27, 777793386), (38, 552642669), (54, 388896693), (57, 368428446), (81, 259264462), (114, 184214223), (157, 133760646), (162, 129632231), (171, 122809482), (314, 66880323), (342, 61404741), (471, 44586882), (513, 40936494), (942, 22293441), (1026, 20468247), (1413, 14862294), (1539, 13645498), (2826, 7431147), (2983, 7040034), (3078, 6822749), (4239, 4954098), (5966, 3520017), (8478, 2477049), (8949, 2346678), (12717, 1651366), (17898, 1173339), (25434, 825683), (26847, 782226), (43457, 483246), (53694, 391113), (80541, 260742), (86914, 241623), (130371, 161082)]