20179998

素因数分解:

$2^1\times 3^2\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{577}}^1$

素因数の和:681

約数の個数: 48

約数和(自身を含む): 45985680

約数和(自身を除く): 25805682

約数列:

[1, 2, 3, 6, 9, 18, 29, 58, 67, 87, 134, 174, 201, 261, 402, 522, 577, 603, 1154, 1206, 1731, 1943, 3462, 3886, 5193, 5829, 10386, 11658, 16733, 17487, 33466, 34974, 38659, 50199, 77318, 100398, 115977, 150597, 231954, 301194, 347931, 695862, 1121111, 2242222, 3363333, 6726666, 10089999, 20179998]

約数ペア:

[(1, 20179998), (2, 10089999), (3, 6726666), (6, 3363333), (9, 2242222), (18, 1121111), (29, 695862), (58, 347931), (67, 301194), (87, 231954), (134, 150597), (174, 115977), (201, 100398), (261, 77318), (402, 50199), (522, 38659), (577, 34974), (603, 33466), (1154, 17487), (1206, 16733), (1731, 11658), (1943, 10386), (3462, 5829), (3886, 5193)]