257435220

素因数分解:

$2^2\times 3^1\times 5^1\times 7^4\times {\mathrm{1787}}^1$

素因数の和:1827

約数の個数: 120

約数和(自身を含む): 841375584

約数和(自身を除く): 583940364

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 343, 420, 490, 588, 686, 735, 980, 1029, 1372, 1470, 1715, 1787, 2058, 2401, 2940, 3430, 3574, 4116, 4802, 5145, 5361, 6860, 7148, 7203, 8935, 9604, 10290, 10722, 12005, 12509, 14406, 17870, 20580, 21444, 24010, 25018, 26805, 28812, 35740, 36015, 37527, 48020, 50036, 53610, 62545, 72030, 75054, 87563, 107220, 125090, 144060, 150108, 175126, 187635, 250180, 262689, 350252, 375270, 437815, 525378, 612941, 750540, 875630, 1050756, 1225882, 1313445, 1751260, 1838823, 2451764, 2626890, 3064705, 3677646, 4290587, 5253780, 6129410, 7355292, 8581174, 9194115, 12258820, 12871761, 17162348, 18388230, 21452935, 25743522, 36776460, 42905870, 51487044, 64358805, 85811740, 128717610, 257435220]

約数ペア:

[(1, 257435220), (2, 128717610), (3, 85811740), (4, 64358805), (5, 51487044), (6, 42905870), (7, 36776460), (10, 25743522), (12, 21452935), (14, 18388230), (15, 17162348), (20, 12871761), (21, 12258820), (28, 9194115), (30, 8581174), (35, 7355292), (42, 6129410), (49, 5253780), (60, 4290587), (70, 3677646), (84, 3064705), (98, 2626890), (105, 2451764), (140, 1838823), (147, 1751260), (196, 1313445), (210, 1225882), (245, 1050756), (294, 875630), (343, 750540), (420, 612941), (490, 525378), (588, 437815), (686, 375270), (735, 350252), (980, 262689), (1029, 250180), (1372, 187635), (1470, 175126), (1715, 150108), (1787, 144060), (2058, 125090), (2401, 107220), (2940, 87563), (3430, 75054), (3574, 72030), (4116, 62545), (4802, 53610), (5145, 50036), (5361, 48020), (6860, 37527), (7148, 36015), (7203, 35740), (8935, 28812), (9604, 26805), (10290, 25018), (10722, 24010), (12005, 21444), (12509, 20580), (14406, 17870)]