208740

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{71}}^1$

素因数の和:97

約数の個数: 72

約数和(自身を含む): 689472

約数和(自身を除く): 480732

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 71, 84, 98, 105, 140, 142, 147, 196, 210, 213, 245, 284, 294, 355, 420, 426, 490, 497, 588, 710, 735, 852, 980, 994, 1065, 1420, 1470, 1491, 1988, 2130, 2485, 2940, 2982, 3479, 4260, 4970, 5964, 6958, 7455, 9940, 10437, 13916, 14910, 17395, 20874, 29820, 34790, 41748, 52185, 69580, 104370, 208740]

約数ペア:

[(1, 208740), (2, 104370), (3, 69580), (4, 52185), (5, 41748), (6, 34790), (7, 29820), (10, 20874), (12, 17395), (14, 14910), (15, 13916), (20, 10437), (21, 9940), (28, 7455), (30, 6958), (35, 5964), (42, 4970), (49, 4260), (60, 3479), (70, 2982), (71, 2940), (84, 2485), (98, 2130), (105, 1988), (140, 1491), (142, 1470), (147, 1420), (196, 1065), (210, 994), (213, 980), (245, 852), (284, 735), (294, 710), (355, 588), (420, 497), (426, 490)]