1656551960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{1373}}^1$

素因数の和:1561

約数の個数: 128

約数和(自身を含む): 4431974400

約数和(自身を除く): 2775422440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 56, 62, 70, 124, 139, 140, 155, 217, 248, 278, 280, 310, 434, 556, 620, 695, 868, 973, 1085, 1112, 1240, 1373, 1390, 1736, 1946, 2170, 2746, 2780, 3892, 4309, 4340, 4865, 5492, 5560, 6865, 7784, 8618, 8680, 9611, 9730, 10984, 13730, 17236, 19222, 19460, 21545, 27460, 30163, 34472, 38444, 38920, 42563, 43090, 48055, 54920, 60326, 76888, 85126, 86180, 96110, 120652, 150815, 170252, 172360, 190847, 192220, 212815, 241304, 297941, 301630, 340504, 381694, 384440, 425630, 595882, 603260, 763388, 851260, 954235, 1191764, 1206520, 1335929, 1489705, 1526776, 1702520, 1908470, 2383528, 2671858, 2979410, 3816940, 5343716, 5916257, 5958820, 6679645, 7633880, 10687432, 11832514, 11917640, 13359290, 23665028, 26718580, 29581285, 41413799, 47330056, 53437160, 59162570, 82827598, 118325140, 165655196, 207068995, 236650280, 331310392, 414137990, 828275980, 1656551960]

約数ペア:

[(1, 1656551960), (2, 828275980), (4, 414137990), (5, 331310392), (7, 236650280), (8, 207068995), (10, 165655196), (14, 118325140), (20, 82827598), (28, 59162570), (31, 53437160), (35, 47330056), (40, 41413799), (56, 29581285), (62, 26718580), (70, 23665028), (124, 13359290), (139, 11917640), (140, 11832514), (155, 10687432), (217, 7633880), (248, 6679645), (278, 5958820), (280, 5916257), (310, 5343716), (434, 3816940), (556, 2979410), (620, 2671858), (695, 2383528), (868, 1908470), (973, 1702520), (1085, 1526776), (1112, 1489705), (1240, 1335929), (1373, 1206520), (1390, 1191764), (1736, 954235), (1946, 851260), (2170, 763388), (2746, 603260), (2780, 595882), (3892, 425630), (4309, 384440), (4340, 381694), (4865, 340504), (5492, 301630), (5560, 297941), (6865, 241304), (7784, 212815), (8618, 192220), (8680, 190847), (9611, 172360), (9730, 170252), (10984, 150815), (13730, 120652), (17236, 96110), (19222, 86180), (19460, 85126), (21545, 76888), (27460, 60326), (30163, 54920), (34472, 48055), (38444, 43090), (38920, 42563)]