19691970

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{97}}^1\times {\mathrm{101}}^1$

素因数の和:275

約数の個数: 64

約数和(自身を含む): 48940416

約数和(自身を除く): 29248446

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 67, 97, 101, 134, 194, 201, 202, 291, 303, 335, 402, 485, 505, 582, 606, 670, 970, 1005, 1010, 1455, 1515, 2010, 2910, 3030, 6499, 6767, 9797, 12998, 13534, 19497, 19594, 20301, 29391, 32495, 33835, 38994, 40602, 48985, 58782, 64990, 67670, 97485, 97970, 101505, 146955, 194970, 203010, 293910, 656399, 1312798, 1969197, 3281995, 3938394, 6563990, 9845985, 19691970]

約数ペア:

[(1, 19691970), (2, 9845985), (3, 6563990), (5, 3938394), (6, 3281995), (10, 1969197), (15, 1312798), (30, 656399), (67, 293910), (97, 203010), (101, 194970), (134, 146955), (194, 101505), (201, 97970), (202, 97485), (291, 67670), (303, 64990), (335, 58782), (402, 48985), (485, 40602), (505, 38994), (582, 33835), (606, 32495), (670, 29391), (970, 20301), (1005, 19594), (1010, 19497), (1455, 13534), (1515, 12998), (2010, 9797), (2910, 6767), (3030, 6499)]