8169980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{67}}^2$

素因数の和:163

約数の個数: 72

約数和(自身を含む): 21436128

約数和(自身を除く): 13266148

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 67, 70, 91, 130, 134, 140, 182, 260, 268, 335, 364, 455, 469, 670, 871, 910, 938, 1340, 1742, 1820, 1876, 2345, 3484, 4355, 4489, 4690, 6097, 8710, 8978, 9380, 12194, 17420, 17956, 22445, 24388, 30485, 31423, 44890, 58357, 60970, 62846, 89780, 116714, 121940, 125692, 157115, 233428, 291785, 314230, 408499, 583570, 628460, 816998, 1167140, 1633996, 2042495, 4084990, 8169980]

約数ペア:

[(1, 8169980), (2, 4084990), (4, 2042495), (5, 1633996), (7, 1167140), (10, 816998), (13, 628460), (14, 583570), (20, 408499), (26, 314230), (28, 291785), (35, 233428), (52, 157115), (65, 125692), (67, 121940), (70, 116714), (91, 89780), (130, 62846), (134, 60970), (140, 58357), (182, 44890), (260, 31423), (268, 30485), (335, 24388), (364, 22445), (455, 17956), (469, 17420), (670, 12194), (871, 9380), (910, 8978), (938, 8710), (1340, 6097), (1742, 4690), (1820, 4489), (1876, 4355), (2345, 3484)]