257420520

素因数分解:

$2^3\times 3^2\times 5^1\times 7^2\times {\mathrm{14593}}^1$

素因数の和:14624

約数の個数: 144

約数和(自身を含む): 973273860

約数和(自身を除く): 715853340

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 49, 56, 60, 63, 70, 72, 84, 90, 98, 105, 120, 126, 140, 147, 168, 180, 196, 210, 245, 252, 280, 294, 315, 360, 392, 420, 441, 490, 504, 588, 630, 735, 840, 882, 980, 1176, 1260, 1470, 1764, 1960, 2205, 2520, 2940, 3528, 4410, 5880, 8820, 14593, 17640, 29186, 43779, 58372, 72965, 87558, 102151, 116744, 131337, 145930, 175116, 204302, 218895, 262674, 291860, 306453, 350232, 408604, 437790, 510755, 525348, 583720, 612906, 656685, 715057, 817208, 875580, 919359, 1021510, 1050696, 1225812, 1313370, 1430114, 1532265, 1751160, 1838718, 2043020, 2145171, 2451624, 2626740, 2860228, 3064530, 3575285, 3677436, 4086040, 4290342, 4596795, 5253480, 5720456, 6129060, 6435513, 7150570, 7354872, 8580684, 9193590, 10725855, 12258120, 12871026, 14301140, 17161368, 18387180, 21451710, 25742052, 28602280, 32177565, 36774360, 42903420, 51484104, 64355130, 85806840, 128710260, 257420520]

約数ペア:

[(1, 257420520), (2, 128710260), (3, 85806840), (4, 64355130), (5, 51484104), (6, 42903420), (7, 36774360), (8, 32177565), (9, 28602280), (10, 25742052), (12, 21451710), (14, 18387180), (15, 17161368), (18, 14301140), (20, 12871026), (21, 12258120), (24, 10725855), (28, 9193590), (30, 8580684), (35, 7354872), (36, 7150570), (40, 6435513), (42, 6129060), (45, 5720456), (49, 5253480), (56, 4596795), (60, 4290342), (63, 4086040), (70, 3677436), (72, 3575285), (84, 3064530), (90, 2860228), (98, 2626740), (105, 2451624), (120, 2145171), (126, 2043020), (140, 1838718), (147, 1751160), (168, 1532265), (180, 1430114), (196, 1313370), (210, 1225812), (245, 1050696), (252, 1021510), (280, 919359), (294, 875580), (315, 817208), (360, 715057), (392, 656685), (420, 612906), (441, 583720), (490, 525348), (504, 510755), (588, 437790), (630, 408604), (735, 350232), (840, 306453), (882, 291860), (980, 262674), (1176, 218895), (1260, 204302), (1470, 175116), (1764, 145930), (1960, 131337), (2205, 116744), (2520, 102151), (2940, 87558), (3528, 72965), (4410, 58372), (5880, 43779), (8820, 29186), (14593, 17640)]