21087312

素因数分解:

$2^4\times 3^1\times {\mathrm{67}}^1\times {\mathrm{79}}^1\times {\mathrm{83}}^1$

素因数の和:240

約数の個数: 80

約数和(自身を含む): 56663040

約数和(自身を除く): 35575728

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 48, 67, 79, 83, 134, 158, 166, 201, 237, 249, 268, 316, 332, 402, 474, 498, 536, 632, 664, 804, 948, 996, 1072, 1264, 1328, 1608, 1896, 1992, 3216, 3792, 3984, 5293, 5561, 6557, 10586, 11122, 13114, 15879, 16683, 19671, 21172, 22244, 26228, 31758, 33366, 39342, 42344, 44488, 52456, 63516, 66732, 78684, 84688, 88976, 104912, 127032, 133464, 157368, 254064, 266928, 314736, 439319, 878638, 1317957, 1757276, 2635914, 3514552, 5271828, 7029104, 10543656, 21087312]

約数ペア:

[(1, 21087312), (2, 10543656), (3, 7029104), (4, 5271828), (6, 3514552), (8, 2635914), (12, 1757276), (16, 1317957), (24, 878638), (48, 439319), (67, 314736), (79, 266928), (83, 254064), (134, 157368), (158, 133464), (166, 127032), (201, 104912), (237, 88976), (249, 84688), (268, 78684), (316, 66732), (332, 63516), (402, 52456), (474, 44488), (498, 42344), (536, 39342), (632, 33366), (664, 31758), (804, 26228), (948, 22244), (996, 21172), (1072, 19671), (1264, 16683), (1328, 15879), (1608, 13114), (1896, 11122), (1992, 10586), (3216, 6557), (3792, 5561), (3984, 5293)]