19861140

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{25463}}^1$

素因数の和:25488

約数の個数: 48

約数和(自身を含む): 59891328

約数和(自身を除く): 40030188

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 25463, 50926, 76389, 101852, 127315, 152778, 254630, 305556, 331019, 381945, 509260, 662038, 763890, 993057, 1324076, 1527780, 1655095, 1986114, 3310190, 3972228, 4965285, 6620380, 9930570, 19861140]

約数ペア:

[(1, 19861140), (2, 9930570), (3, 6620380), (4, 4965285), (5, 3972228), (6, 3310190), (10, 1986114), (12, 1655095), (13, 1527780), (15, 1324076), (20, 993057), (26, 763890), (30, 662038), (39, 509260), (52, 381945), (60, 331019), (65, 305556), (78, 254630), (130, 152778), (156, 127315), (195, 101852), (260, 76389), (390, 50926), (780, 25463)]