128247990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{499}}^1\times {\mathrm{659}}^1$

素因数の和:1181

約数の個数: 64

約数和(自身を含む): 332640000

約数和(自身を除く): 204392010

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 499, 659, 998, 1318, 1497, 1977, 2495, 2994, 3295, 3954, 4990, 6487, 6590, 7485, 8567, 9885, 12974, 14970, 17134, 19461, 19770, 25701, 32435, 38922, 42835, 51402, 64870, 85670, 97305, 128505, 194610, 257010, 328841, 657682, 986523, 1644205, 1973046, 3288410, 4274933, 4932615, 8549866, 9865230, 12824799, 21374665, 25649598, 42749330, 64123995, 128247990]

約数ペア:

[(1, 128247990), (2, 64123995), (3, 42749330), (5, 25649598), (6, 21374665), (10, 12824799), (13, 9865230), (15, 8549866), (26, 4932615), (30, 4274933), (39, 3288410), (65, 1973046), (78, 1644205), (130, 986523), (195, 657682), (390, 328841), (499, 257010), (659, 194610), (998, 128505), (1318, 97305), (1497, 85670), (1977, 64870), (2495, 51402), (2994, 42835), (3295, 38922), (3954, 32435), (4990, 25701), (6487, 19770), (6590, 19461), (7485, 17134), (8567, 14970), (9885, 12974)]