1818954760

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{367}}^1\times {\mathrm{571}}^1$

素因数の和:987

約数の個数: 128

約数和(自身を含む): 4849827840

約数和(自身を除く): 3030873080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 56, 62, 70, 124, 140, 155, 217, 248, 280, 310, 367, 434, 571, 620, 734, 868, 1085, 1142, 1240, 1468, 1736, 1835, 2170, 2284, 2569, 2855, 2936, 3670, 3997, 4340, 4568, 5138, 5710, 7340, 7994, 8680, 10276, 11377, 11420, 12845, 14680, 15988, 17701, 19985, 20552, 22754, 22840, 25690, 31976, 35402, 39970, 45508, 51380, 56885, 70804, 79639, 79940, 88505, 91016, 102760, 113770, 123907, 141608, 159278, 159880, 177010, 209557, 227540, 247814, 318556, 354020, 398195, 419114, 455080, 495628, 619535, 637112, 708040, 796390, 838228, 991256, 1047785, 1239070, 1466899, 1592780, 1676456, 2095570, 2478140, 2933798, 3185560, 4191140, 4956280, 5867596, 6496267, 7334495, 8382280, 11735192, 12992534, 14668990, 25985068, 29337980, 32481335, 45473869, 51970136, 58675960, 64962670, 90947738, 129925340, 181895476, 227369345, 259850680, 363790952, 454738690, 909477380, 1818954760]

約数ペア:

[(1, 1818954760), (2, 909477380), (4, 454738690), (5, 363790952), (7, 259850680), (8, 227369345), (10, 181895476), (14, 129925340), (20, 90947738), (28, 64962670), (31, 58675960), (35, 51970136), (40, 45473869), (56, 32481335), (62, 29337980), (70, 25985068), (124, 14668990), (140, 12992534), (155, 11735192), (217, 8382280), (248, 7334495), (280, 6496267), (310, 5867596), (367, 4956280), (434, 4191140), (571, 3185560), (620, 2933798), (734, 2478140), (868, 2095570), (1085, 1676456), (1142, 1592780), (1240, 1466899), (1468, 1239070), (1736, 1047785), (1835, 991256), (2170, 838228), (2284, 796390), (2569, 708040), (2855, 637112), (2936, 619535), (3670, 495628), (3997, 455080), (4340, 419114), (4568, 398195), (5138, 354020), (5710, 318556), (7340, 247814), (7994, 227540), (8680, 209557), (10276, 177010), (11377, 159880), (11420, 159278), (12845, 141608), (14680, 123907), (15988, 113770), (17701, 102760), (19985, 91016), (20552, 88505), (22754, 79940), (22840, 79639), (25690, 70804), (31976, 56885), (35402, 51380), (39970, 45508)]