257012520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{35111}}^1$

素因数の和:35186

約数の個数: 64

約数和(自身を含む): 783699840

約数和(自身を除く): 526687320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 61, 120, 122, 183, 244, 305, 366, 488, 610, 732, 915, 1220, 1464, 1830, 2440, 3660, 7320, 35111, 70222, 105333, 140444, 175555, 210666, 280888, 351110, 421332, 526665, 702220, 842664, 1053330, 1404440, 2106660, 2141771, 4213320, 4283542, 6425313, 8567084, 10708855, 12850626, 17134168, 21417710, 25701252, 32126565, 42835420, 51402504, 64253130, 85670840, 128506260, 257012520]

約数ペア:

[(1, 257012520), (2, 128506260), (3, 85670840), (4, 64253130), (5, 51402504), (6, 42835420), (8, 32126565), (10, 25701252), (12, 21417710), (15, 17134168), (20, 12850626), (24, 10708855), (30, 8567084), (40, 6425313), (60, 4283542), (61, 4213320), (120, 2141771), (122, 2106660), (183, 1404440), (244, 1053330), (305, 842664), (366, 702220), (488, 526665), (610, 421332), (732, 351110), (915, 280888), (1220, 210666), (1464, 175555), (1830, 140444), (2440, 105333), (3660, 70222), (7320, 35111)]