13490380

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{271}}^1$

素因数の和:430

約数の個数: 48

約数和(自身を含む): 30159360

約数和(自身を除く): 16668980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 131, 190, 262, 271, 380, 524, 542, 655, 1084, 1310, 1355, 2489, 2620, 2710, 4978, 5149, 5420, 9956, 10298, 12445, 20596, 24890, 25745, 35501, 49780, 51490, 71002, 102980, 142004, 177505, 355010, 674519, 710020, 1349038, 2698076, 3372595, 6745190, 13490380]

約数ペア:

[(1, 13490380), (2, 6745190), (4, 3372595), (5, 2698076), (10, 1349038), (19, 710020), (20, 674519), (38, 355010), (76, 177505), (95, 142004), (131, 102980), (190, 71002), (262, 51490), (271, 49780), (380, 35501), (524, 25745), (542, 24890), (655, 20596), (1084, 12445), (1310, 10298), (1355, 9956), (2489, 5420), (2620, 5149), (2710, 4978)]