19970454

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{181}}^1$

素因数の和:301

約数の個数: 64

約数和(自身を含む): 47803392

約数和(自身を除く): 27832938

約数列:

[1, 2, 3, 6, 7, 14, 21, 37, 42, 71, 74, 111, 142, 181, 213, 222, 259, 362, 426, 497, 518, 543, 777, 994, 1086, 1267, 1491, 1554, 2534, 2627, 2982, 3801, 5254, 6697, 7602, 7881, 12851, 13394, 15762, 18389, 20091, 25702, 36778, 38553, 40182, 46879, 55167, 77106, 89957, 93758, 110334, 140637, 179914, 269871, 281274, 475487, 539742, 950974, 1426461, 2852922, 3328409, 6656818, 9985227, 19970454]

約数ペア:

[(1, 19970454), (2, 9985227), (3, 6656818), (6, 3328409), (7, 2852922), (14, 1426461), (21, 950974), (37, 539742), (42, 475487), (71, 281274), (74, 269871), (111, 179914), (142, 140637), (181, 110334), (213, 93758), (222, 89957), (259, 77106), (362, 55167), (426, 46879), (497, 40182), (518, 38553), (543, 36778), (777, 25702), (994, 20091), (1086, 18389), (1267, 15762), (1491, 13394), (1554, 12851), (2534, 7881), (2627, 7602), (2982, 6697), (3801, 5254)]