256730090

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{1303}}^1$

素因数の和:1407

約数の個数: 64

約数和(自身を含む): 523895040

約数和(自身を除く): 267164950

約数列:

[1, 2, 5, 10, 17, 19, 34, 38, 61, 85, 95, 122, 170, 190, 305, 323, 610, 646, 1037, 1159, 1303, 1615, 2074, 2318, 2606, 3230, 5185, 5795, 6515, 10370, 11590, 13030, 19703, 22151, 24757, 39406, 44302, 49514, 79483, 98515, 110755, 123785, 158966, 197030, 221510, 247570, 397415, 420869, 794830, 841738, 1351211, 1510177, 2104345, 2702422, 3020354, 4208690, 6756055, 7550885, 13512110, 15101770, 25673009, 51346018, 128365045, 256730090]

約数ペア:

[(1, 256730090), (2, 128365045), (5, 51346018), (10, 25673009), (17, 15101770), (19, 13512110), (34, 7550885), (38, 6756055), (61, 4208690), (85, 3020354), (95, 2702422), (122, 2104345), (170, 1510177), (190, 1351211), (305, 841738), (323, 794830), (610, 420869), (646, 397415), (1037, 247570), (1159, 221510), (1303, 197030), (1615, 158966), (2074, 123785), (2318, 110755), (2606, 98515), (3230, 79483), (5185, 49514), (5795, 44302), (6515, 39406), (10370, 24757), (11590, 22151), (13030, 19703)]