31491908

素因数分解:

$2^2\times 7^2\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1$

素因数の和:193

約数の個数: 72

約数和(自身を含む): 68027904

約数和(自身を除く): 36535996

約数列:

[1, 2, 4, 7, 14, 28, 31, 49, 62, 71, 73, 98, 124, 142, 146, 196, 217, 284, 292, 434, 497, 511, 868, 994, 1022, 1519, 1988, 2044, 2201, 2263, 3038, 3479, 3577, 4402, 4526, 5183, 6076, 6958, 7154, 8804, 9052, 10366, 13916, 14308, 15407, 15841, 20732, 30814, 31682, 36281, 61628, 63364, 72562, 107849, 110887, 145124, 160673, 215698, 221774, 253967, 321346, 431396, 443548, 507934, 642692, 1015868, 1124711, 2249422, 4498844, 7872977, 15745954, 31491908]

約数ペア:

[(1, 31491908), (2, 15745954), (4, 7872977), (7, 4498844), (14, 2249422), (28, 1124711), (31, 1015868), (49, 642692), (62, 507934), (71, 443548), (73, 431396), (98, 321346), (124, 253967), (142, 221774), (146, 215698), (196, 160673), (217, 145124), (284, 110887), (292, 107849), (434, 72562), (497, 63364), (511, 61628), (868, 36281), (994, 31682), (1022, 30814), (1519, 20732), (1988, 15841), (2044, 15407), (2201, 14308), (2263, 13916), (3038, 10366), (3479, 9052), (3577, 8804), (4402, 7154), (4526, 6958), (5183, 6076)]