21178768

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{233}}^1$

素因数の和:296

約数の個数: 80

約数和(自身を含む): 48746880

約数和(自身を除く): 27568112

約数列:

[1, 2, 4, 8, 13, 16, 19, 23, 26, 38, 46, 52, 76, 92, 104, 152, 184, 208, 233, 247, 299, 304, 368, 437, 466, 494, 598, 874, 932, 988, 1196, 1748, 1864, 1976, 2392, 3029, 3496, 3728, 3952, 4427, 4784, 5359, 5681, 6058, 6992, 8854, 10718, 11362, 12116, 17708, 21436, 22724, 24232, 35416, 42872, 45448, 48464, 57551, 69667, 70832, 85744, 90896, 101821, 115102, 139334, 203642, 230204, 278668, 407284, 460408, 557336, 814568, 920816, 1114672, 1323673, 1629136, 2647346, 5294692, 10589384, 21178768]

約数ペア:

[(1, 21178768), (2, 10589384), (4, 5294692), (8, 2647346), (13, 1629136), (16, 1323673), (19, 1114672), (23, 920816), (26, 814568), (38, 557336), (46, 460408), (52, 407284), (76, 278668), (92, 230204), (104, 203642), (152, 139334), (184, 115102), (208, 101821), (233, 90896), (247, 85744), (299, 70832), (304, 69667), (368, 57551), (437, 48464), (466, 45448), (494, 42872), (598, 35416), (874, 24232), (932, 22724), (988, 21436), (1196, 17708), (1748, 12116), (1864, 11362), (1976, 10718), (2392, 8854), (3029, 6992), (3496, 6058), (3728, 5681), (3952, 5359), (4427, 4784)]