30128140

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{433}}^1$

素因数の和:527

約数の個数: 72

約数和(自身を含む): 74807712

約数和(自身を除く): 44679572

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 71, 98, 140, 142, 196, 245, 284, 355, 433, 490, 497, 710, 866, 980, 994, 1420, 1732, 1988, 2165, 2485, 3031, 3479, 4330, 4970, 6062, 6958, 8660, 9940, 12124, 13916, 15155, 17395, 21217, 30310, 30743, 34790, 42434, 60620, 61486, 69580, 84868, 106085, 122972, 153715, 212170, 215201, 307430, 424340, 430402, 614860, 860804, 1076005, 1506407, 2152010, 3012814, 4304020, 6025628, 7532035, 15064070, 30128140]

約数ペア:

[(1, 30128140), (2, 15064070), (4, 7532035), (5, 6025628), (7, 4304020), (10, 3012814), (14, 2152010), (20, 1506407), (28, 1076005), (35, 860804), (49, 614860), (70, 430402), (71, 424340), (98, 307430), (140, 215201), (142, 212170), (196, 153715), (245, 122972), (284, 106085), (355, 84868), (433, 69580), (490, 61486), (497, 60620), (710, 42434), (866, 34790), (980, 30743), (994, 30310), (1420, 21217), (1732, 17395), (1988, 15155), (2165, 13916), (2485, 12124), (3031, 9940), (3479, 8660), (4330, 6958), (4970, 6062)]